[NV42] Resuming Dell Precision M70 crashes
Submitted by Roy Bixler
Assigned to Nouveau Project
Description
Created attachment 73830
dmesg output - first bootup
I am running Debian wheezy and I have found that, with the nouveau driver loaded, suspend/resume results in a hung system. Originally, I was using the proprietary NVidia driver and suspend/resume worked with it. However, I switched to the Nouveau driver after I found that the system was unstable with the NVidia driver while watching videos. I have made sure that all traces of the NVidia driver have been removed before reproducing the bug. Except for this problem, the Nouveau driver works well -- no more crashes while watching videos.
I have also confirmed that suspend/resume works after I unload the nouveau driver. I use the following commands:
echo 0 > /sys/class/vtconsole/vtcon1/bind
rmmod nouveau
pm-suspend
I have also done a test of suspend/resume with Nouveau loaded after activating pm_trace (i.e. echo 1 > /sys/power/pm_trace). I attach a couple of "dmesg" outputs. The most interesting lines from the second "dmesg" command from rebooting after the crash are the following:
[ 0.726626] PM: Hibernation image not present or could not be loaded.
[ 0.726635] registered taskstats version 1
[ 0.727033] Magic number: 0:56:725
[ 0.727036] hash matches drivers/base/power/main.c:571
[ 0.727078] pci 0000:01:00.0: hash matches
[ 0.727139] rtc_cmos 00:06: setting system clock to 1996-05-07 08:42:38 UTC (831458558)
Complete "dmesg" output attached.
Attachment 73830, "dmesg output - first bootup":
dmesg.out