Bug ID 89273
Summary [NVA8] nouveau screen corruption and X lockup when reclocking
Product xorg
Version unspecified
Hardware x86-64 (AMD64)
OS Linux (All)
Status NEW
Severity normal
Priority medium
Component Driver/nouveau
Assignee nouveau@lists.freedesktop.org
Reporter maxim.stargazer@gmail.com
QA Contact xorg-team@lists.x.org

Created attachment 113734 [details]
Thinkpad T410, Quadro NVS 3100M (256M GDDR3) vbios dump

Kernel: 3.19.1
Hardware: Thinkpad T410, Quadro NVS 3100M (256M GDDR3) [similar hw but
different VRAM compared to bug 88415]
Problem: reclocking between pstates 3 and 7 is flawless, but reclocking to
pstate f causes problems.
Possible scenarios:

1. X server is not running, trying to reclock from the fb. 
   echo f > pstate
  Image gets corrupted (vertical flickering lines), but there is no lockup and
after
   echo 7 > pstate
everything gets back to normal. After that system works just fine.
Dmesg attached (with nouveau.debug=debug)

2. X server is running. 
   echo f > pstate
   Screen gets corrupted in similar fashion, but system locks up and after few
second stops to respond even to SysRq.
I managed to get dmesg for this scenario too.

I also mmiotraced functioning reclocking with the nvidia blob. Trace is quite
large (120MB). Should I truncate it somehow to upload, or just provide as is?


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