On Thu, Aug 03, 2006 at 03:06:00PM +0530, Kapil Hari Paranjape wrote:
Content-Description: message
> Hello,
>
> I am using a Debian etch system:
>
> kernel: linux-image-2.6.17-1-686 Debian version 2.6.17-5
> s2ram: uswsusp Debian version 0.2-1
>
> kernel command line: kernel /vmlinuz-2.6.17-1-686 root=/dev/mapper/store-root
> rw quiet init=/bin/bash
> (kernel uses Debian built initramfs which uses a standard test console).
>
> This machine can be identified by:
> sys_vendor = "IBM"
> sys_product = "2887NQ9"
> sys_version = "ThinkPad R51"
> bios_version = "1VET66WW (1.24 )"
>
> lspci -v output is attached.
>
> I tried each command in succession:
>
> s2ram -f
> s2ram -f -a 1
> s2ram -f -a 2
> s2ram -f -a 3
> s2ram -f -p -s
> s2ram -f -s
> s2ram -f -p
> s2ram -f -a 1 -s
>
> None of these "worked". For each of them the system went into suspend
> mode. One resuming with the power button or the "function Fn key",
> the system came up the state where it had the message about "stopping
> tasks" with "======|" at the top of the screen. After this the screen
> did not show anything and keyboard activity produced apparently no
> effect. However, I managed to use Alt-Sysrq to Sync and Unmount
> disks but power-Off did not work---system did not power-off.
>
> I do however *have* a working suspend-to-ram configuration that I learnt
> from
>
> http://www.thinkwiki.org/Problem_with_display_remaining_black_after_resume#Solution_for_ThinkPads_with_Intel_Extreme_Graphics_2
404
> This involves saving the contents of /proc/bus/pci/00/02.0 before
> suspending and restoring it after suspending. I am attaching the
> relevant script.
This is known to some extents, for R50e we have this in the whitelist:
/* R50e needs not yet implemented save_video_pci_state :-(
{ "IBM", "1834*", "", "",
UNSURE },
{ "IBM", "1842*", "", "",
UNSURE },
{ "IBM", "2670*", "", "",
UNSURE },
*/
and your machine probably also falls into the same category.
However, _i_ consider this to be either a driver or a pci-subsystem kernel
bug which really should be solved there.
If somebody really thinks we should work around this in userspace, he has
to either use a custom script and wrap this around "s2ram -f" or send a
patch that implements this cleanly in s2ram. At least this is my opinion
on the matter :-)
--
Stefan Seyfried | "Please, just tell people
QA / R&D Team Mobile Devices | to use KDE."
SUSE LINUX Products GmbH, Nürnberg | -- Linus Torvalds
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