Nouveau - Nov 2013 - [Bug 58378] Distorted graphics on NVIDIA GeForce 8400M G after upgrade the kernel to 3.7.0 version

https://bugs.freedesktop.org/show_bug.cgi?id=58378

--- Comment #14 from torsten.stocklossa at gmail.com ---
HI again, in addition some error messages 

Nov 29 11:21:47 torsten-LIFEBOOK-E8410 kernel: [   66.215782] nouveau E[ 
PGRAPH][0000:01:00.0] ch 2 [0x0007b23000] subc 7 class 0x8297 mthd 0x15e0 data
0x00000000
Nov 29 11:21:47 torsten-LIFEBOOK-E8410 kernel: [   66.304180] nouveau E[ 
PGRAPH][0000:01:00.0] TRAP_MP_EXEC - TP 0 MP 0: INVALID_OPCODE at 000004 warp
10, opcode ffb9c1d8 ffbac2d9
Nov 29 11:21:47 torsten-LIFEBOOK-E8410 kernel: [   66.304188] nouveau E[ 
PGRAPH][0000:01:00.0]  TRAP
Nov 29 11:21:47 torsten-LIFEBOOK-E8410 kernel: [   66.304193] nouveau E[ 
PGRAPH][0000:01:00.0] ch 2 [0x0007b23000] subc 7 class 0x8297 mthd 0x15e0 data
0x00000000
Nov 29 11:21:47 torsten-LIFEBOOK-E8410 kernel: [   66.304477] nouveau E[ 
PGRAPH][0000:01:00.0] TRAP_MP_EXEC - TP 0 MP 0: INVALID_OPCODE at 000004 warp
10, opcode ffb9c1d8 ffbac2d9
Nov 29 11:21:47 torsten-LIFEBOOK-E8410 kernel: [   66.304483] nouveau E[ 
PGRAPH][0000:01:00.0]  TRAP
Nov 29 11:21:47 torsten-LIFEBOOK-E8410 kernel: [   66.304487] nouveau E[ 
PGRAPH][0000:01:00.0] ch 2 [0x0007b23000] subc 7 class 0x8297 mthd 0x15e0 data
0x00000000


and 

Nov 29 11:26:04 torsten-LIFEBOOK-E8410 kernel: [  323.106306] nouveau E[    
DRM] GPU lockup - switching to software fbcon
Nov 29 11:27:07 torsten-LIFEBOOK-E8410 kernel: [  386.736037] nouveau E[   
3431] failed to idle channel 0xcccc0001
Nov 29 11:27:09 torsten-LIFEBOOK-E8410 kernel: [  388.735098] nouveau E[  
PFIFO][0000:01:00.0] channel 3 unload timeout
Nov 29 11:27:12 torsten-LIFEBOOK-E8410 kernel: [  391.732025] nouveau E[   
3431] failed to idle channel 0xcccc0000
Nov 29 11:27:14 torsten-LIFEBOOK-E8410 kernel: [  393.731221] nouveau E[  
PFIFO][0000:01:00.0] channel 2 unload timeout
Nov 29 11:28:09 torsten-LIFEBOOK-E8410 kernel: [  448.580025] nouveau E[   
4056] failed to idle channel 0xcccc0001
Nov 29 11:28:11 torsten-LIFEBOOK-E8410 kernel: [  450.579162] nouveau E[  
PFIFO][0000:01:00.0] channel 3 unload timeout
Nov 29 11:28:14 torsten-LIFEBOOK-E8410 kernel: [  453.576022] nouveau E[   
4056] failed to idle channel 0xcccc0000
Nov 29 11:28:16 torsten-LIFEBOOK-E8410 kernel: [  455.575198] nouveau E[  
PFIFO][0000:01:00.0] channel 2 unload timeout
Nov 29 11:29:17 torsten-LIFEBOOK-E8410 kernel: [  516.552036] nouveau E[   
4211] failed to idle channel 0xcccc0001
Nov 29 11:29:19 torsten-LIFEBOOK-E8410 kernel: [  518.553893] nouveau E[  
PFIFO][0000:01:00.0] channel 3 unload timeout
Nov 29 11:29:22 torsten-LIFEBOOK-E8410 kernel: [  521.556024] nouveau E[   
4211] failed to idle channel 0xcccc0000
Nov 29 11:29:24 torsten-LIFEBOOK-E8410 kernel: [  523.555077] nouveau E[  
PFIFO][0000:01:00.0] channel 2 unload timeout


For both the session is Gnome. Now when running on Gnome (no effects ) ist is
slighly more stable.

As mentioned I also tried NVIDIA drivers .... with the effect that the system
was unusable at all. 

Since the issue seems to be quite old . . . there should be an appropriate
solution by now !

cheers
TS

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