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More CRC errors...
by Justin Rajewski
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I just got my new Gumstix Verdex XL6P motherboard after my first got
countless CRC errors. Sadly the new one does the exact thing... Why? Justin ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Dave Hylands
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Hi Justin,
On Jan 23, 2008 6:08 PM, Justin Rajewski <justin@...> wrote: > I just got my new Gumstix Verdex XL6P motherboard after my first got > countless CRC errors. Sadly the new one does the exact thing... Why? See this message from yesterday: <http://article.gmane.org/gmane.linux.distributions.gumstix.general/33556> -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Black, Michael-2
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Isn't the flash on gumstix NAND flash?
I browsed through the MTD driver and I don't see any bad block routines. I also don't see any status checking when reading the device. I don't claim to be a flash expert at all but where's the ECC management? This note also claims block 0 is the only one that's guaranteed out-of-the-box. http://en.wikipedia.org/wiki/Flash_memory#_note-0 ___________________ Michael D. Black Essex black@... -----Original Message----- From: gumstix-users-bounces@... [mailto:gumstix-users-bounces@...] On Behalf Of Dave Hylands Sent: Wednesday, January 23, 2008 8:23 PM To: General mailing list for gumstix users. Subject: Re: [Gumstix-users] More CRC errors... Hi Justin, On Jan 23, 2008 6:08 PM, Justin Rajewski <justin@...> wrote: > I just got my new Gumstix Verdex XL6P motherboard after my first got > countless CRC errors. Sadly the new one does the exact thing... Why? See this message from yesterday: <http://article.gmane.org/gmane.linux.distributions.gumstix.general/3355 6> -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ ------------------------------------------------------------------------ - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users This electronic message and any files transmitted with it contain information which may be privileged and/or proprietary. The information is intended for use solely by the intended recipient(s). If you are not the intended recipient, be aware that any disclosure, copying, distribution or use of this information is prohibited. If you have received this electronic message in error, please advise the sender by reply email or by telephone (301-939-7000) and delete the message. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Black, Michael-2
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Since this is a jffs2 error I also found this patch which fixed somebody
elses flash CRC errors on jffs2 (and which I don't see in linux-2.6.21gum/fs/jffs2/read_inode.c) http://lists.infradead.org/pipermail/linux-mtd/2007-May/018453.html ___________________ Michael D. Black Essex black@... -----Original Message----- From: gumstix-users-bounces@... [mailto:gumstix-users-bounces@...] On Behalf Of Black, Michael Sent: Thursday, January 24, 2008 7:05 AM To: General mailing list for gumstix users. Subject: Re: [Gumstix-users] More CRC errors... Isn't the flash on gumstix NAND flash? I browsed through the MTD driver and I don't see any bad block routines. I also don't see any status checking when reading the device. I don't claim to be a flash expert at all but where's the ECC management? This note also claims block 0 is the only one that's guaranteed out-of-the-box. http://en.wikipedia.org/wiki/Flash_memory#_note-0 ___________________ Michael D. Black Essex black@... -----Original Message----- From: gumstix-users-bounces@... [mailto:gumstix-users-bounces@...] On Behalf Of Dave Hylands Sent: Wednesday, January 23, 2008 8:23 PM To: General mailing list for gumstix users. Subject: Re: [Gumstix-users] More CRC errors... Hi Justin, On Jan 23, 2008 6:08 PM, Justin Rajewski <justin@...> wrote: > I just got my new Gumstix Verdex XL6P motherboard after my first got > countless CRC errors. Sadly the new one does the exact thing... Why? See this message from yesterday: <http://article.gmane.org/gmane.linux.distributions.gumstix.general/3355 6> -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ ------------------------------------------------------------------------ - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users This electronic message and any files transmitted with it contain information which may be privileged and/or proprietary. The information is intended for use solely by the intended recipient(s). If you are not the intended recipient, be aware that any disclosure, copying, distribution or use of this information is prohibited. If you have received this electronic message in error, please advise the sender by reply email or by telephone (301-939-7000) and delete the message. ------------------------------------------------------------------------ - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users This electronic message and any files transmitted with it contain information which may be privileged and/or proprietary. The information is intended for use solely by the intended recipient(s). If you are not the intended recipient, be aware that any disclosure, copying, distribution or use of this information is prohibited. If you have received this electronic message in error, please advise the sender by reply email or by telephone (301-939-7000) and delete the message. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by sakoman
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> Isn't the flash on gumstix NAND flash?
No, it is NOR flash: http://www.intel.com/design/flcomp/prodbref/306782.htm Steve ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by sakoman
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Unfortunately this patch doesn't address the issue we are having.
Steve On Jan 24, 2008 5:14 AM, Black, Michael <Michael.Black@...> wrote: > Since this is a jffs2 error I also found this patch which fixed somebody > elses flash CRC errors on jffs2 (and which I don't see in > linux-2.6.21gum/fs/jffs2/read_inode.c) > > http://lists.infradead.org/pipermail/linux-mtd/2007-May/018453.html > > > ___________________ > Michael D. Black > Essex > black@... > > -----Original Message----- > From: gumstix-users-bounces@... > > [mailto:gumstix-users-bounces@...] On Behalf Of Black, > Michael > Sent: Thursday, January 24, 2008 7:05 AM > To: General mailing list for gumstix users. > Subject: Re: [Gumstix-users] More CRC errors... > > Isn't the flash on gumstix NAND flash? > I browsed through the MTD driver and I don't see any bad block routines. > I also don't see any status checking when reading the device. > > I don't claim to be a flash expert at all but where's the ECC > management? > This note also claims block 0 is the only one that's guaranteed > out-of-the-box. > http://en.wikipedia.org/wiki/Flash_memory#_note-0 > > > ___________________ > Michael D. Black > Essex > black@... > -----Original Message----- > From: gumstix-users-bounces@... > [mailto:gumstix-users-bounces@...] On Behalf Of Dave > Hylands > Sent: Wednesday, January 23, 2008 8:23 PM > To: General mailing list for gumstix users. > Subject: Re: [Gumstix-users] More CRC errors... > > Hi Justin, > > On Jan 23, 2008 6:08 PM, Justin Rajewski <justin@...> wrote: > > I just got my new Gumstix Verdex XL6P motherboard after my first got > > countless CRC errors. Sadly the new one does the exact thing... Why? > > See this message from yesterday: > <http://article.gmane.org/gmane.linux.distributions.gumstix.general/3355 > 6> > > -- > Dave Hylands > Vancouver, BC, Canada > http://www.DaveHylands.com/ > > ------------------------------------------------------------------------ > - > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > gumstix-users mailing list > gumstix-users@... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > > > > > > > > This electronic message and any files transmitted with it contain > information which may be privileged and/or proprietary. The information > is intended for use solely by the intended recipient(s). If you are not > the intended recipient, be aware that any disclosure, copying, > distribution or use of this information is prohibited. If you have > received this electronic message in error, please advise the sender by > reply email or by telephone (301-939-7000) and delete the message. > > ------------------------------------------------------------------------ > - > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > gumstix-users mailing list > gumstix-users@... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > > > > > > > > This electronic message and any files transmitted with it contain information which may be privileged and/or proprietary. The information is intended for use solely by the intended recipient(s). If you are not the intended recipient, be aware that any disclosure, copying, distribution or use of this information is prohibited. If you have received this electronic message in error, please advise the sender by reply email or by telephone (301-939-7000) and delete the message. > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > gumstix-users mailing list > gumstix-users@... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Dave Hylands
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Hi Michael,
On Jan 24, 2008 5:05 AM, Black, Michael <Michael.Black@...> wrote: > Isn't the flash on gumstix NAND flash? No - it's NOR flash. -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Dave Hylands
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Hi Michael,
> On Jan 24, 2008 5:05 AM, Black, Michael <Michael.Black@...> wrote: > > Isn't the flash on gumstix NAND flash? > > No - it's NOR flash. Sorry for the redunant answer. For some reason I didn't see Steve's reply before I posted my own. -- Dave Hylands Vancouver, BC, Canada http://www.DaveHylands.com/ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Black, Michael-2
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So what about the ECC management then?
The flash manager docs sure talk about it but I don't see any read retries in the linux code nor ECC checks. http://download.intel.com/design/flcomp/manuals/30443505.pdf ___________________ Michael D. Black Essex black@... -----Original Message----- From: gumstix-users-bounces@... [mailto:gumstix-users-bounces@...] On Behalf Of Steve Sakoman Sent: Thursday, January 24, 2008 8:03 AM To: General mailing list for gumstix users. Subject: Re: [Gumstix-users] More CRC errors... > Isn't the flash on gumstix NAND flash? No, it is NOR flash: http://www.intel.com/design/flcomp/prodbref/306782.htm Steve ------------------------------------------------------------------------ - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users This electronic message and any files transmitted with it contain information which may be privileged and/or proprietary. The information is intended for use solely by the intended recipient(s). If you are not the intended recipient, be aware that any disclosure, copying, distribution or use of this information is prohibited. If you have received this electronic message in error, please advise the sender by reply email or by telephone (301-939-7000) and delete the message. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by sakoman
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Michael,
Wear-leveling, error detection, and bad block handling are done directly by jffs2: http://sourceware.org/jffs2/jffs2-html/jffs2-html.html The CRC errors are a symptom of the real problem, which is *not* data errors in the array. It is the fact that the flash chip gets stuck n Read Status Register mode which causes it to return 0x0080 on every access, which of course will cause jffs2 to think there is a CRC error. Steve On Jan 24, 2008 7:13 AM, Black, Michael <Michael.Black@...> wrote: > So what about the ECC management then? > The flash manager docs sure talk about it but I don't see any read > retries in the linux code nor ECC checks. > http://download.intel.com/design/flcomp/manuals/30443505.pdf > > > ___________________ > Michael D. Black > Essex > black@... > > -----Original Message----- > From: gumstix-users-bounces@... > [mailto:gumstix-users-bounces@...] On Behalf Of Steve > Sakoman > Sent: Thursday, January 24, 2008 8:03 AM > To: General mailing list for gumstix users. > Subject: Re: [Gumstix-users] More CRC errors... > > > > Isn't the flash on gumstix NAND flash? > > No, it is NOR flash: > > http://www.intel.com/design/flcomp/prodbref/306782.htm > > Steve > > > ------------------------------------------------------------------------ > - > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > gumstix-users mailing list > gumstix-users@... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > > > > > > > > This electronic message and any files transmitted with it contain information which may be privileged and/or proprietary. The information is intended for use solely by the intended recipient(s). If you are not the intended recipient, be aware that any disclosure, copying, distribution or use of this information is prohibited. If you have received this electronic message in error, please advise the sender by reply email or by telephone (301-939-7000) and delete the message. > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > gumstix-users mailing list > gumstix-users@... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Justin Rajewski
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On some boots I also get errors like:
Welcome to the Gumstix Linux Distribution! gumstix login: Dec 31 17:06:44 udhcpc[386]: [truncated] m Dec 31 17:06:47 udhcpc[387]: [truncated] m Dec 31 17:07:06 udhcpc[390]: [truncated] m Dec 31 17:07:09 udhcpc[391]: [truncated] m Dec 31 17:07:28 udhcpc[394]: [truncated] m Dec 31 17:07:31 udhcpc[395]: [truncated] m Dec 31 17:07:50 udhcpc[398]: [truncated] m Dec 31 17:07:53 udhcpc[399]: [truncated] m Dec 31 17:08:12 udhcpc[402]: [truncated] m Dec 31 17:08:15 udhcpc[403]: [truncated] m Dec 31 17:08:34 udhcpc[406]: [truncated] m Dec 31 17:08:37 udhcpc[407]: [truncated] m Dec 31 17:08:56 udhcpc[410]: [truncated] m Dec 31 17:08:59 udhcpc[411]: [truncated] m I get the errors even after I have loged in. They just keep comming. Hopes this helps, Justin
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Re: More CRC errors...
by Justin Rajewski
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This is to help anyone working on fixing theses errors.
My newest boot can be downloaded at: http://coilgunpower.com/gumstix/newboot.txt I just reflashed it, I seem to get the most errors then. They slowly reduce until it is around 10 errors, occasionally it will be worse. Justin
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Re: More CRC errors...
by Arigead
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> > Steve Sakoman wrote:
> >> > >> Michael, > >> > >> Wear-leveling, error detection, and bad block handling are done > >> directly by jffs2: > >> > >> http://sourceware.org/jffs2/jffs2-html/jffs2-html.html > >> > >> The CRC errors are a symptom of the real problem, which is *not* data > >> errors in the array. It is the fact that the flash chip gets stuck n > >> Read Status Register mode which causes it to return 0x0080 on every > >> access, which of course will cause jffs2 to think there is a CRC > >> error. > >> > >> Steve > >> Excuse any ignorance on my part, but rest assured I'm only trying to help. I don't have this problem but can I ask a stupid question. If you have a board that works and one that don't work what happens when you swap the flash chips? Is this even possible? Yes it could well be a stupid question but it may sort of help home in on the problem. Go easy on me ;-) John ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by sakoman
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John,
You can do that if you have the proper equipment. We're still investigating the issue and are taking that sort of measure. In the meantime, if you have one of these problem units you should contact gumstix for an RMA. Steve On Jan 31, 2008 1:07 AM, john <captain.deadly@...> wrote: > > > Steve Sakoman wrote: > > >> > > >> Michael, > > >> > > >> Wear-leveling, error detection, and bad block handling are done > > >> directly by jffs2: > > >> > > >> http://sourceware.org/jffs2/jffs2-html/jffs2-html.html > > >> > > >> The CRC errors are a symptom of the real problem, which is *not* data > > >> errors in the array. It is the fact that the flash chip gets stuck n > > >> Read Status Register mode which causes it to return 0x0080 on every > > >> access, which of course will cause jffs2 to think there is a CRC > > >> error. > > >> > > >> Steve > > >> > > Excuse any ignorance on my part, but rest assured I'm only trying to help. > I don't have this problem but can I ask a stupid question. > > If you have a board that works and one that don't work what happens > when you swap the flash chips? Is this even possible? Yes it could well > be a stupid question but it may sort of help home in on the problem. > > Go easy on me ;-) > > John > > ------------------------------------------------------------------------- > > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > gumstix-users mailing list > gumstix-users@... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Arigead
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No I am one of the lucky ones and it's working for me.
Just reading about this problem and it sounds like a very curious one. Those are the intesting ones I suppose. Curiosity killed the cat ;-) On Jan 31, 2008 2:28 PM, Steve Sakoman <sakoman@...> wrote: > John, > > You can do that if you have the proper equipment. We're still > investigating the issue and are taking that sort of measure. > > In the meantime, if you have one of these problem units you should > contact gumstix for an RMA. > > Steve > > > On Jan 31, 2008 1:07 AM, john <captain.deadly@...> wrote: > > > > Steve Sakoman wrote: > > > >> > > > >> Michael, > > > >> > > > >> Wear-leveling, error detection, and bad block handling are done > > > >> directly by jffs2: > > > >> > > > >> http://sourceware.org/jffs2/jffs2-html/jffs2-html.html > > > >> > > > >> The CRC errors are a symptom of the real problem, which is *not* data > > > >> errors in the array. It is the fact that the flash chip gets stuck n > > > >> Read Status Register mode which causes it to return 0x0080 on every > > > >> access, which of course will cause jffs2 to think there is a CRC > > > >> error. > > > >> > > > >> Steve > > > >> > > > > Excuse any ignorance on my part, but rest assured I'm only trying to help. > > I don't have this problem but can I ask a stupid question. > > > > If you have a board that works and one that don't work what happens > > when you swap the flash chips? Is this even possible? Yes it could well > > be a stupid question but it may sort of help home in on the problem. > > > > Go easy on me ;-) > > > > John > > > > > ------------------------------------------------------------------------- > > > > This SF.net email is sponsored by: Microsoft > > Defy all challenges. Microsoft(R) Visual Studio 2008. > > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > > _______________________________________________ > > gumstix-users mailing list > > gumstix-users@... > > https://lists.sourceforge.net/lists/listinfo/gumstix-users > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > gumstix-users mailing list > gumstix-users@... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Don Anderson
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We have opened a section in the new developer site at gumstix.net that provides information on "known issues" such as this:
http://www.gumstix.net/Hardware/cat/Known-issues/112.html Don ++++++++++++ On Jan 31, 2008 6:28 AM, Steve Sakoman <sakoman@...> wrote: John, ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Christian Ruocco-2
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Hi Steve,
The RMA option for us is not a solution as the costs for shipping are astronomical from our current location in South Africa. Will are considering simply buying more gumstix and writing off the dead stuff :( Is there any guarantee that we won't end up ordering more broken stuff? I get the feeling the QA is poor over there. And second, is there a hack/patch we could apply to the flash 'driver' code to ignore the CRC errors since if I understand what you're saying, the data is fine on the flash, the flash is simply returning erroneous statuses? This would do fine until we get new stuff and allow me to continue developing. Thanks, Xris. Steve Sakoman wrote: John, You can do that if you have the proper equipment. We're still investigating the issue and are taking that sort of measure. In the meantime, if you have one of these problem units you should contact gumstix for an RMA. Steve On Jan 31, 2008 1:07 AM, john captain.deadly@... wrote: ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Don Anderson
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Hi Christian
Thanks for letting us know that you have one of the verdex motherboards exhibiting CRC errors. We pull and test a representative sample from every manufacturing lot. Obviously, with the previous lot of boards, this process did not catch the problem and a number of defective verdex XL6P motherboards were shipped recently. We are re-evaluating the size of our lot samples. For the batch of motherboards just received 100% testing has shown no recurrence of this issue. We will issue an RMA to you if you would identify the purchaser and order number of the motherboard of concern. We do not have record of a verdex XL6P purchase in your name. Note: for customers facing expensive shipping costs to return a faulty product from overseas, we do not require the return of the faulty board, but we do prefer to receive the board back. Don @ Gumstix ++++++++++++++++++++++++++++ On Feb 5, 2008 1:24 AM, Christian Ruocco <christian@...> wrote:
------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by sakoman
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Xris,
There isn't yet a software workaround. I'd go with Don's RMA suggestion. I think you'll be happier in the long run. Steve On Feb 5, 2008 1:24 AM, Christian Ruocco <christian@...> wrote: > > Hi Steve, > > The RMA option for us is not a solution as the costs for shipping are > astronomical from our current location in South Africa. Will are considering > simply buying more gumstix and writing off the dead stuff :( Is there any > guarantee that we won't end up ordering more broken stuff? I get the feeling > the QA is poor over there. And second, is there a hack/patch we could apply > to the flash 'driver' code to ignore the CRC errors since if I understand > what you're saying, the data is fine on the flash, the flash is simply > returning erroneous statuses? This would do fine until we get new stuff and > allow me to continue developing. > > Thanks, > Xris. > > > > Steve Sakoman wrote: > John, > > You can do that if you have the proper equipment. We're still > investigating the issue and are taking that sort of measure. > > In the meantime, if you have one of these problem units you should > contact gumstix for an RMA. > > Steve > > On Jan 31, 2008 1:07 AM, john <captain.deadly@...> wrote: > > > > > Steve Sakoman wrote: > > > Michael, > > Wear-leveling, error detection, and bad block handling are done > directly by jffs2: > > http://sourceware.org/jffs2/jffs2-html/jffs2-html.html > > The CRC errors are a symptom of the real problem, which is *not* data > errors in the array. It is the fact that the flash chip gets stuck n > Read Status Register mode which causes it to return 0x0080 on every > access, which of course will cause jffs2 to think there is a CRC > error. > > Steve > > > Excuse any ignorance on my part, but rest assured I'm only trying to help. > I don't have this problem but can I ask a stupid question. > > If you have a board that works and one that don't work what happens > when you swap the flash chips? Is this even possible? Yes it could well > be a stupid question but it may sort of help home in on the problem. > > Go easy on me ;-) > > John > > ------------------------------------------------------------------------- > > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > gumstix-users mailing list > gumstix-users@... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > gumstix-users mailing list > gumstix-users@... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > gumstix-users mailing list > gumstix-users@... > https://lists.sourceforge.net/lists/listinfo/gumstix-users > > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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Re: More CRC errors...
by Christian Ruocco-2
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Hi Don,
Thanks for clearing that up. An associate of mine bought 2 consoleLCD-vx LCD packs. Both exibit the CRC problem. His name is Chad Venables. You will find the order under his name. Chad will be contacting you shortly. Thanks for the help. Kind Regards, Christian Ruocco. Don Anderson wrote: Hi Christian ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ gumstix-users mailing list gumstix-users@... https://lists.sourceforge.net/lists/listinfo/gumstix-users |
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