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#1 2013-09-07 20:50:31
- sollidsnake
- Member
- Registered: 2012-01-30
- Posts: 107
[SOLVED] Black dots glitches in Firefox
Hi all!
When I scroll web pages in Firefox I'm presented with black dots that multiply themselves as I keep scrolling. They go away if I refresh the page or scroll faster.
Here's a "screenshoot"
http://cdn.imghack.se/images/58eae51879 … ac5ca0.jpg
My laptop is hybrid with Intel and NVidia video cards. What I have already tried:
- Disabling composition and changing the WM
- Using NVidia card instead of Intel
- Updating system
- Using a Aurora and Nightly versions of FF
- Launching Firefox with a brand new user
None of those seemed to help. I got no more ideas. Can someone help?
Thank you in advance. 
Last edited by sollidsnake (2013-09-07 22:03:50)
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#2 2013-09-07 20:55:41
- jasonwryan
- Anarchist
- From: .nz
- Registered: 2009-05-09
- Posts: 30,424
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Re: [SOLVED] Black dots glitches in Firefox
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#3 2013-09-07 22:03:31
- sollidsnake
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- Registered: 2012-01-30
- Posts: 107
Re: [SOLVED] Black dots glitches in Firefox
You're right. It only happens under sna method. Changing to uxa fixes it, but makes Firefox slower. But knowing what exactly was the problem, I got it fixed under sna by installing xf86-video-intel-git from AUR. Thank you.
Last edited by sollidsnake (2013-09-07 22:05:47)
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#4 2013-09-09 01:04:07
- cfr
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- From: Cymru
- Registered: 2011-11-27
- Posts: 7,148
Re: [SOLVED] Black dots glitches in Firefox
So why did you still see the problem when using the nvidia card, do you think?
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#5 2013-09-09 01:18:57
- sollidsnake
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- Registered: 2012-01-30
- Posts: 107
Re: [SOLVED] Black dots glitches in Firefox
So why did you still see the problem when using the nvidia card, do you think?
I ran Firefox using optirun. So I think it's probably because using optirun results in a different performance than when running the entire Xorg under NVidia.
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#6 2013-09-09 20:50:54
- ssri
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- Registered: 2010-02-16
- Posts: 216
Re: [SOLVED] Black dots glitches in Firefox
FYI (upstream bug report): https://bugs.freedesktop.org/show_bug.cgi?id=68410
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#7 2013-09-11 03:46:34
- b4nst0n
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- Registered: 2013-08-08
- Posts: 50
Re: [SOLVED] Black dots glitches in Firefox
This driver now uses SNA as the default acceleration method. You can still fall back to UXA if you run into trouble. To do so, save a file with the following content as /etc/X11/xorg.conf.d/20-intel.conf :
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "uxa"
EndSection
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