Created attachment 129161 [details] photo of the panic screen I suspended my laptop (MacBook 2,1) by closing the lid. Shortly after I reopened my laptop and the system resumed, it switched to a console with a "panic occured" message. Then the keyboard does not answer anymore (I could not switch to another console nor to X.org). I join a photo of the panic screen. I am sorry for the low quality of the photo. I hope that you can read valuable information anyway. Or is there a log where we can read the information afterward? I am testing this new kernel from [1] to see if it resolves bug [2]: "sometimes suspend fails and the whole system freeze with high CPU usage" [1] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-rc6-trusty [2] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1289972
Please follow this file to debug. http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/power/basic-pm-debugging.txt From the log, the panic seems happens in the wireless driver. Please unload the wireless driver and try again.
Thanks for your quick answer! The instructions you gave are a bit complicated to me. What I did: 1. 'rmmod ath9k' (I guess this is my wireless driver) 2. 5 suspend/resume cycles by closing my laptop's lid 3. 'cat /sys/kernel/debug/suspend_stats' success: 5 fail: 0 4. 'lsmod ath9k' 5. 5 suspend/resume cycles by closing my laptop's lid 6. 'cat /sys/kernel/debug/suspend_stats' success: 10 fail: 0 The panic did not reproduce. Shall I test it more times? With my normal usage, I suspend/resume my laptop about 5-10 times a day. I'll keep watching in the coming days if it reproduce with the driver loaded. However it is not very practical for me to use my laptop without the wireless. NOTE: Sometimes the laptop resumes on a black screen. The mouse pointer reacts, and it changes when I move it around, as it hovers content, but the screen is black. I need to switch to a console then back to X (Ctrl-Alt-F3, Ctrl-Alt-F7) to completely resume the session.
(In reply to Luc Pionchon from comment #2) > The panic did not reproduce. Shall I test it more times? With my normal > usage, I suspend/resume my laptop about 5-10 times a day. I'll keep watching > in the coming days if it reproduce with the driver loaded. However it is not > very practical for me to use my laptop without the wireless. From current logs, this is wireless bug and so reassign.
Now I am at 27 resume successes, with the wireless module loaded, and the panic did not reappear. $ cat /sys/kernel/debug/suspend_stats success: 27 fail: 0
I just got the kernel panic again.
Created attachment 131801 [details] kernel panic console screen This time I got a much more readable screen shot