Re: Workaround for suspend/resume SD card problems
On Tue, 2008-08-26 at 18:38 +0200, AVee wrote: Depending on your usage of the SD card you could also workaround the issue with a few symlinks. When the card is wrongly mounted just add symlinks to the new location of the content of the card in /media/card/. Once you did that /media/card will either contain the contents of the card (before suspend) or valid symlinks to the content of the card (after suspend) which works just as well. I can't see how this will help if you are booted off the SD card and your whole file system is on the card. Also this bug/fault is corrupting the information on the SD card. If it is indeed a bug with the SD card driver not providing enough SD clock cycles for the card to finish executing commands it needs to be fixed with modification to the SD card driver. My workaround is only providing more clock cycles to the SD card. I would be interested to know if anyone else has tried it and if it works for them. Simon ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Workaround for suspend/resume SD card problems
Is it possible to execute some script every time the neo comes out from suspend only once? I would like to suspend it with a manually script which enables the sd_idleclk, syncs the sd-card, waits a few seconds and then go to sleep. But after resume i want to disable sd_idleclk automatically so that the gps works without problems. And i don't want to do the sd_idleclk de-/activation trick when starting a gps app. Fox Mulder wrote: Maybe it is possible to get a workaround for this problem until it is fixed. When using a custom suspend script we maybe could do this stuff manual. When i would suspend the neo i start a script which first activates the sd_idleclk. Than it activates some access to the sd card and after that suspend the neo. And after resuming maybe reverse these steps. This is quite a workaround, but when it works i'm willing to do this until the problem gets fixed. :) Ciao, Rainer Simon Matthews wrote: With my 8G Sandisk SD card, i can reliably fix the problems i have been having by turning on the SD clock all the time. To do this type the command echo 1 /sys/module/glamo_mci/parameters/sd_idleclk then do something that will access the SD card before doing a suspend. This of course won't do the GPS much good, but i think the real fix might be to give the SD card more clock cycles before and after commands to give it time to finish executing commands. Simon ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Workaround for suspend/resume SD card problems
Simon Matthews wrote: I would be interested to know if anyone else has tried it and if it works for them. Works for me. Two shell scripts: /etc/apm/suspend.d/00sd_idleclk which contains #!/bin/sh echo 1 /sys/module/glamo_mci/parameters/sd_idleclk touch /home/root/.profile sync;sync;sync and /etc/apm/resume.d/00sd_idleclk which contains #!/bin/sh echo 0 /sys/module/glamo_mci/parameters/sd_idleclk with that, suspend and resume works as expected. -stacy ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Workaround for suspend/resume SD card problems
That is exactly the thing i was searching for. Scripts that would be automatically executed before suspend or after resume. :) Now i will try this and activate suspend support on my neo. Until now i don't use suspend with my debian system on the sd-card because i don't want to have problems with the sd-card after resuming. Ciao, Rainer -stacy wrote: Simon Matthews wrote: I would be interested to know if anyone else has tried it and if it works for them. Works for me. Two shell scripts: /etc/apm/suspend.d/00sd_idleclk which contains #!/bin/sh echo 1 /sys/module/glamo_mci/parameters/sd_idleclk touch /home/root/.profile sync;sync;sync and /etc/apm/resume.d/00sd_idleclk which contains #!/bin/sh echo 0 /sys/module/glamo_mci/parameters/sd_idleclk with that, suspend and resume works as expected. -stacy ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Workaround for suspend/resume SD card problems
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Hash: SHA1
here another workaround i worked out this evening:
first i turned off apmd - when running it prevents system from
suspending - more investigation going on
what's actually running for me is:
mv /usr/bin/apm /usr/bin/apm.o
creating /usr/bin/apm with following content:
- - - snip
#!/bin/sh
echo 1 /sys/module/glamo_mci/parameters/sd_idleclk
apm.o ${*}
echo 0 /sys/module/glamo_mci/parameters/sd_idleclk
- - - snap ---
regards, morlac
Am 25.08.2008 um 17:10 schrieb Simon Matthews:
With my 8G Sandisk SD card, i can reliably fix the problems i have
been
having by turning on the SD clock all the time. To do this type the
command
echo 1 /sys/module/glamo_mci/parameters/sd_idleclk
then do something that will access the SD card before doing a suspend.
This of course won't do the GPS much good, but i think the real fix
might be to give the SD card more clock cycles before and after
commands
to give it time to finish executing commands.
Simon
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Workaround for suspend/resume SD card problems
With my 8G Sandisk SD card, i can reliably fix the problems i have been having by turning on the SD clock all the time. To do this type the command echo 1 /sys/module/glamo_mci/parameters/sd_idleclk then do something that will access the SD card before doing a suspend. This of course won't do the GPS much good, but i think the real fix might be to give the SD card more clock cycles before and after commands to give it time to finish executing commands. Simon ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Workaround for suspend/resume SD card problems
This of course won't do the GPS much good, but i think the real fix might be to give the SD card more clock cycles before and after commands to give it time to finish executing commands. wouldn't it be sensible to turn on the sd clock before suspend and do somthing? after resume the clock might be turned off again, so allowing gps to work. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Workaround for suspend/resume SD card problems
Maybe it is possible to get a workaround for this problem until it is fixed. When using a custom suspend script we maybe could do this stuff manual. When i would suspend the neo i start a script which first activates the sd_idleclk. Than it activates some access to the sd card and after that suspend the neo. And after resuming maybe reverse these steps. This is quite a workaround, but when it works i'm willing to do this until the problem gets fixed. :) Ciao, Rainer Simon Matthews wrote: With my 8G Sandisk SD card, i can reliably fix the problems i have been having by turning on the SD clock all the time. To do this type the command echo 1 /sys/module/glamo_mci/parameters/sd_idleclk then do something that will access the SD card before doing a suspend. This of course won't do the GPS much good, but i think the real fix might be to give the SD card more clock cycles before and after commands to give it time to finish executing commands. Simon ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
