Ubuntu
linux package

  1. Bug #1412873
  2. Comment #8

Comment 8 for bug 1412873

Revision history for this message
stan383 (stan383) wrote : Re: Ubuntu 14.10 sometimes does not suspend

Mr. Christopher,
I tested with 2 kernel versions:

3.2.66-030266-generic (http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2.66-precise/)
--> using this kernel, I was able to boot successfully and then intiated suspend. PC was suspended. But waking the PC by pressing any key on keyboard led to normal boot process instead of resume from suspend. I tried this 2 times - both times PC was suspended, but waking led to boot process instead of resuming from suspend.

3.2.60-030260-generic (http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2.60-precise/)
--> using this kernel, I was able to boot successfully and then initiated suspend. PC was suspended. I was able to wake the PC and resume worked properly as well. I tested this 13 times and all tests were successfull. I only saw these error in dmesg (one entry per suspend):
[ 162.537136] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 181.021083] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 210.186947] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 231.687493] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 246.578770] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 294.540121] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 319.081181] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 377.916508] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 389.471168] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 401.818031] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 414.748936] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 454.988862] [drm:pch_irq_handler] *ERROR* PCH poison interrupt
[ 547.582342] [drm:pch_irq_handler] *ERROR* PCH poison interrupt

Maybe the erros listed above are not critical. But I can confirm using older kernel 3.2.60-030260-generic in Ubuntu 14.10, what is similar version of kernel used in Debian 7.7, makes suspend work for my PC. Unfortunately the graphic card performance is very poor with this kernel, so I can't use this old kernel on daily purpose.