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Old 02-18-08, 04:37 AM   #1
KMK
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Join Date: Feb 2008
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Unhappy Thinkpad T61 sometimes crashes on resume from suspend

Hello

I would like to report a bug that sometimes (in about 10% of cases) inhibits wakeup from suspend of my Thinkpad T61 8889-2BG. I am using Ubuntu 7.10. This bug occurs with the standard kernel as well as with a self compiled vanilla kernel (2.6.24.2) patched with thinkpad-acpi.

The notebook suspends without any problems at all times. However, sometimes (about 10% of cases) after opening the lid or pressing the power button when the notebook is suspended, the moon stays lit, the battery LED and the power LED are turned on, the harddisk starts to spin, but then nothing else happens. The screen stays dark and there is no harddisk activity. Then, I have to power off the notebook and restart. The recommended DebuggingKernelSuspend method produces the following messages in dmesg:

[ 1.864000] Using IPI No-Shortcut mode
[ 1.864000] Magic number: 0:35:998
[ 1.864000] hash matches /build/buildd/linux-source-2.6.22-2.6.22/drivers/base/power/resume.c:57
[ 1.864000] hash matches device ttyae
[ 1.868000] hash matches device 00:00
[ 1.868000] Freeing unused kernel memory: 364k freed

With kernel version 2.6.24.2 the messages are as follows:

[ 28.217234] Using IPI No-Shortcut mode
[ 28.217367] Magic number: 0:865:403
[ 28.217368] hash matches drivers/base/power/main.c:97
[ 28.217599] Freeing unused kernel memory: 340k freed

Anyway, resume works reliably when booting with init=/bin/bash. It also works reliably if I switch to a text console and kill gdm leaving the nvidia module loaded. However, using both methods the screen stays black after resuming but the keyboard works. There were also no crashes so far using the vesa driver instead of the proprietary NVIDIA driver. I tried all combinations of the options in the acpi-support file but it did not work reliably with the proprietary NVIDIA driver. The kernel parameter acpi_sleep=s3_mode did not help too.

Therefore, the problem seams to be caused by the proprietary NVIDIA driver or the interaction of the kernel and this driver. Is there any way to remove this driver before suspending? Using the vesa driver is not a real alternative as it does not provide 3D acceleration and consumes much more energy from battery.

As the unreliability of suspending renders this feature completely useless I would be very grateful if someone could help me to solve the problem. Please let me know if you need any further information.

Many thanks in advance!

Karl Martin
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Old 02-18-08, 05:28 AM   #2
tier
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Posts: 118
Default Re: Thinkpad T61 sometimes crashes on resume from suspend

Same here.
Thinkpad T61 with an NVS 140m.
Arch Linux with kernel 2.6.24.2.
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Old 03-03-08, 03:08 AM   #3
KMK
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Default Re: Thinkpad T61 sometimes crashes on resume from suspend

Unfortunately, this bug persists with the current nvidia driver (169.12).
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Old 03-03-08, 04:02 PM   #4
jdi
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Default Re: Thinkpad T61 sometimes crashes on resume from suspend

Same here.

I can also add that this occurs in all the versions of the T61 BIOS
that I've tried: 1.26, 2.07, 2.09, and 2.10.

2.10 causes additional resume problems (blinking moon), so I've gone
back to 2.09.

Also it occurs in both kernel 2.6.22-14 (gutsy) and 2.6.24-10 (hardy).
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Old 03-26-08, 02:44 AM   #5
KMK
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Default Re: Thinkpad T61 sometimes crashes on resume from suspend

With a fresh installation of Ubuntu Hardy Beta 64bit the above mentioned problem does not occur anymore. Therefore, I conclude that this problem is restricted to the 32bit version.
However, there are other minor problems with suspending in the 64bit version: After resuming mostly a white screen is displayed instead of the password prompt. However, after entering the password the desktop is correctly displayed. Only sometimes a white area in the lower right corner of the screen remains even after suspending again. The mouse pointer is shown in this area but clicking on the area where the panel applets are usually located does not cause any reaction. After restarting X everything is fine.
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