Go Back   nV News Forums > Linux Support Forums > NVIDIA Linux

Newegg Daily Deals

Reply
 
Thread Tools
Old 02-26-07, 12:55 PM   #25
wmhobbes
Registered User
 
Join Date: Feb 2007
Posts: 10
Default Re: Frequesnt screen flickers and occasional os crash

Quote:
Originally Posted by mini
I also have a ipw3945 card, but it does NOT share IRQ with nvidia (nothing does), but I still have flickers...
That might just be a coincidence (post hoc ergo propter hoc selection), honestly I did not witness that behaviour often. 90% of the times I just have flickers until I restart X.

That's enough to spoil the fun, though.

BTW: i upgraded the BIOS to the latest ASUS release which has also an "upgraded" video BIOS, having a more recent release date, but a smaller release number. No joy with the flickers, but strange enough.

cheers
hobs
wmhobbes is offline   Reply With Quote
Old 03-05-07, 03:22 PM   #26
colchaodemola
Registered User
 
Join Date: Jan 2007
Posts: 18
Default Re: Frequesnt screen flickers and occasional os crash

attached is my log file , this problem is really driving me crazy...
Attached Files
File Type: log nvidia-bug-report.log (84.9 KB, 179 views)
colchaodemola is offline   Reply With Quote
Old 03-06-07, 02:01 AM   #27
riteshsarraf
Registered User
 
Join Date: Aug 2006
Posts: 16
Default Re: Frequesnt screen flickers and occasional os crash

Just to add more to it.

The flicker issue is not reproducible when using TwinView.
riteshsarraf is offline   Reply With Quote
Old 03-06-07, 10:26 AM   #28
thewall83
Registered User
 
Join Date: Jan 2007
Posts: 11
Default Re: Frequesnt screen flickers and occasional os crash

Quote:
Originally Posted by riteshsarraf
Just to add more to it.

The flicker issue is not reproducible when using TwinView.
But...does this happen only when you have the second monitor on?
Or only adding the Twinview's options in xorg.conf?

And...just to add more info about this bug:
- It happens from time to time.
- It's also present with xorg 7.2(I reproduced it).
- It seems not having any relationship with the ipw card(My ipw doesn't share the IRQ with the nvidia).
- It's present with the newer kernels(I reroduced it with 2.6.20-rc4, with 2.6.21-rc1, with 2.6.20-beyond).
- It seems not having any relationship with CPU frequency scaling.
- It's related to Composite Managers(Beryl or Compiz): switching them off, it's not reproducible.
- It's making me become mad!


EDIT:
Can someone confirm it's not reproducible with Xgl instead of NvidiaGLX(AiGLX)?

A small tip I can do to stop the black flash(only temporally) is to change the screen frequency from "Auto" to "60Hz"(my video frequency) as shown in this image:
thewall83 is offline   Reply With Quote
Old 03-06-07, 07:00 PM   #29
Lithorus
Registered User
 
Lithorus's Avatar
 
Join Date: Sep 2004
Posts: 783
Default Re: Frequesnt screen flickers and occasional os crash

Try adding this to /etc/modprobe.d/options
Quote:
options nvidia NVreg_RegistryDwords="PerfLevelSrc=0x2222"
Lithorus is offline   Reply With Quote
Old 03-09-07, 06:03 AM   #30
dfriel
Registered User
 
Join Date: Mar 2007
Posts: 1
Default Re: Frequesnt screen flickers and occasional os crash

Seems to work for me - thanks!

Dell XPS M1710
GTX7950
Ubuntu 6.10
dfriel is offline   Reply With Quote
Old 03-09-07, 08:45 AM   #31
wmhobbes
Registered User
 
Join Date: Feb 2007
Posts: 10
Default Re: Frequesnt screen flickers and occasional os crash

Quote:
Originally Posted by Lithorus
Try adding this to /etc/modprobe.d/options
Does anybody have a hint of what this effectively does? It gets spread on the Internet as the fix for every stability problem, but what is it?

Yes, I don't feel much at ease in tweaking undocumented hw registers on expensive hardware I depend on.
wmhobbes is offline   Reply With Quote
Old 03-09-07, 10:10 AM   #32
thewall83
Registered User
 
Join Date: Jan 2007
Posts: 11
Default Re: Frequesnt screen flickers and occasional os crash

Quote:
Originally Posted by Lithorus
Try adding this to /etc/modprobe.d/options
I don't know what it means, but it works now.
thewall83 is offline   Reply With Quote

Old 03-09-07, 07:53 PM   #33
swegecko
Registered User
 
Join Date: Mar 2007
Posts: 1
Default Re: Frequesnt screen flickers and occasional os crash

I am experiencing similar flickers on an Asus F3Jc (Core 2 Duo / GForceGo 7300), but with some important differences. I'm trying to get a good picture on an external Samsung SyncMaster 204B.

My experiences (yes, I have spent a _lot_ of time trying to work this out):
1. I have no problems with the built-in DFP. Possibly because of the low resolution (1280x800).
2. I have no problems with VGA output in high resolutions (1600x1200), nor with DVI in 1280x1024 or less.
3. I _only_ experience the flickering when using 1600x1200 over DVI.
3 1/2. The flickering is also present in Windows (Vista), but even worse. Also only in 1600x1200.
4. Another computer (with a GeForce 6200) has no problems at all with the same monitor (and same DVI cable) in 1600x1200.
5. I don't get any XID logs in dmesg, nor have I had any real crashes.
6. The PerfLevelSrc trick doesn't do anything for me (grrrr!)
7. The flickering usually starts when there's some activity, for example starting mozilla on the external screen, then it gets worse and worse until the screen finally goes completely black.
8. _sometimes_ there are random flickering pixels in dark areas between the flickering.
9. I've tried the debian stock 2.6.18-4-686 kernel and 8776 drivers, and a custom 2.6.20.1 kernel, 9755 and 9746 drivers. I have also tried many different combinations of Xorg.conf options and kernel parameters.

I'm a bit pissed off, because I bought this laptop because it had DVI. Now I have to use blurry VGA until this can be solved.
Attached Files
File Type: zip nvidia-bug-report.zip (44.3 KB, 140 views)
swegecko is offline   Reply With Quote
Old 03-10-07, 03:14 AM   #34
stefan42
Registered User
 
Join Date: Jul 2003
Posts: 51
Default Re: Frequesnt screen flickers and occasional os crash

Quote:
Originally Posted by Lithorus
Try adding this to /etc/modprobe.d/options
It really helps (in my case I have sometimes the Xid and black screen or the horizontal screen shaking) - great!

But it seems as if this option causes the GPU not to change the frequency anymore. nvclock -s returns constant values. Without the option the GPU frequency goes down when there is no GPU activity. (Which is okay because I had the horizontal screen shaking exactly when the frequency changes).

Can someone confirm that NVreg_RegistryDwords="PerfLevelSrc=0x2222" disables GPU frequency scaling?
stefan42 is offline   Reply With Quote
Old 03-11-07, 09:38 PM   #35
MrFuzzemz
Registered User
 
Join Date: Mar 2007
Posts: 4
Default Re: Frequesnt screen flickers and occasional os crash

Quote:
Originally Posted by Lithorus
Try adding this to /etc/modprobe.d/options
I, too, would like to know for certain what this does. Thanks.
MrFuzzemz is offline   Reply With Quote
Old 04-19-07, 03:13 PM   #36
Perty
Registered User
 
Join Date: Jan 2007
Posts: 7
Default Re: Frequesnt screen flickers and occasional os crash

Quote:
Originally Posted by MrFuzzemz
I, too, would like to know for certain what this does. Thanks.
A little late but I have the same problem, screen flickering and sometimes hangs whole computer. Running Fedora Core 6 with latest Kernel. Running a LG-M1 laptop with dual core and GeForceGo 7400.

It reminds me of the good old Amiga when it crached sometime it looked like this.

/Perty

I'll try the suggested:
options nvidia NVreg_RegistryDwords="PerfLevelSrc=0x2222"

UPDATE:
I added the option to: /etc/modprobe.d/nvidia and the screen locked at the loginscreen and only a hard shutdown and removing the option solved the problem, and I have gone back to the nv driver.

Waiting for noveau....

/Perty
Attached Files
File Type: zip nvidia-bug-report.zip (23.5 KB, 142 views)
Perty is offline   Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 02:55 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 1998 - 2014, nV News.