suspend / hibernate not working on Lenovo Thinkpad T400s

I'm seeing similar behavior with an ASUS G60. Previously suspend/hibernate worked well. Now it goes to black screen/freezes, but does not reduce power consumption in any way.

disabling those scripts does not change the behavior in the case of my laptop. The problem is otherwise identical to that described in the summary.

Sorry, I have to admit that my box also froze w/ disabled scripts now. Of course, before submitting this report it worked 5 times without a hassle. Kinda hard to debug.

Currently, I'm back to 'echo (disk|mem) > /sys/power/state'

There I triggered a kernel Ooops in the i915 module on rare occasions.

- a8

I am affected too. Going into standby leads to a frozen screen (showing command line). The standby led blinks steadily and after some time the cpu fan goes up because the notebook gets hotter.
On 10.04 standby used to work.

alien8, thanks for the workaround!

Using a Lenovo T400s, Ubuntu 10.10 64bit.

Sounds like it could be the same bug I reported: 661711.

Moritz, I agree. Sounds very similar. I also have the problem w/ suspend (to RAM). Sorry, I did not find your report earlier.

Does the'echo (disk|mem) > /sys/power/state' thing work for you?

I'm seeing suspend/resume fail frequently (about 1 out of 4 times, it hangs on suspend) on my t400s after I upgraded to Mavrick (64-bit). I was previously using Lucid (64-bit) and never had this issue. I've only tried hibernate once, it worked.

I'm using a brand new T400s with a multitouch screen, on a fresh installation of 10.10. I am also seeing the problem, but I'm seeing the success of recovering from sleep depend on how long the laptop is sleeping. I've disabled sleep from power management, but it still goes to sleep. I've turned on the sleep inhibitor, and it still goes to sleep after a while. I can't seem to find a way to keep it from going to sleep.

Another problem I'm experiencing may be related to the multitouch screen. When I close the lid with my web browser up, and come back to the computer 1/2 hr or so later, I find many more web browser windows open with many sites open. I assume that screen taps are being registered all over. It's possible these taps may disable my sleep inhibitor, which eventually causes my laptop to freeze up. These two bugs make a horrible combination :( The random screen taps only happen when the lid is closed.

Same behavior on 10.10 / Lenovo R400

Lenovo T400, had no problems with sleep mode until upgrade from 10.04 to 10.10. Now every second or third time entering sleep mode either by closing lid or typing FN-F4, the laptop locks up, the little moon-shaped light blinks incessantly, and I have to hold down the power button to kill it and restart to recover.

SOLUTION:

   I had the same suspend issues on a thinkpad X200s.

   The solution for me was to upgrade to the 2.6.36 kernel. Not a single suspend crash since.

Regards,
Dmitry

Status changed to 'Confirmed' because the bug affects multiple users.