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Old 08-31-08, 03:42 AM   #1
kriko
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Default [177.70] IPP2 falling back to IPP1

Hello!
I've set InitialPixmpmapPlacement to "2" on KDE4 startup - so everytime the computer starts up.
I did some queries with -q switch and saw that it was set to "1" - I thought KDE4 was not starting up nvidia-settings command at startup, so I manually set to 2 and checked parameter this time.
Everything was fine.

This morning KDE4 was not responsive as it should be - I did again a query and saw that IPP is set to "1" again. So definitely something is triggering this - I cannot reproduce it.
Might be because sometime when starting a movie (using OpenGL composite effects under KDE 4.1) the screen will go blank for 1/4 of second - maybe this triggers it, but I cannot reproduce this on demand.
Using mplayer with XV.

Bug report attached.

Last edited by kriko; 05-31-11 at 01:34 PM.
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Old 09-01-08, 03:30 AM   #2
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Default Re: [177.70] IPP2 falling back to IPP1

Another one. Yesterday I was playing with video - but couldn't trigger that.
However this morning IPP was again at 1

Last edited by kriko; 05-31-11 at 01:34 PM.
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Old 09-01-08, 06:25 AM   #3
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Default Re: [177.70] IPP2 falling back to IPP1

Caught it!
Code:
Sep  1 13:22:52 linux kernel: NVRM: Xid (0001:00): 13, 0000 80019700 00004097 00001900 00190005 00000800
As I started to play a clip in mplayer - screen flashed for a sec (blank) and when I checked IPP it was set to 1!

Last edited by kriko; 05-31-11 at 01:34 PM.
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Old 09-01-08, 10:41 AM   #4
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Default Re: [177.70] IPP2 falling back to IPP1

UPDATE: this happened again - I was out on lunch and nothing was going on (workstation locked)
I do use KDE 4.1 effects.
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Old 09-01-08, 11:35 AM   #5
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Default Re: [177.70] IPP2 falling back to IPP1

Config settings changing by themselves could actually explain a lot of weird things we've seen here with performance and stability.

I see something similar. When starting nvidia-settings, especially after a few days of uptime, the screen goes black for a few seconds. If I start it again a few minutes later, this does not happen. In the first case it seems to (re-)apply settings that the hardware forgot about.
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Old 09-01-08, 11:59 AM   #6
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Default Re: [177.70] IPP2 falling back to IPP1

Thank you for your confirmation! I'm sure that those Xid errors are causing hw to fall back to failsafe settings.
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Old 09-01-08, 12:21 PM   #7
AaronP
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Default Re: [177.70] IPP2 falling back to IPP1

Yes, you're right, the GPU error recovery code in the driver resets InitialPixmapPlacement to its default value.
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