Bug 92419 - radeon driver on lubuntu 14.04-15.10 displays white flickering scan lines and occasionally parts of the windows on external monitor
Summary: radeon driver on lubuntu 14.04-15.10 displays white flickering scan lines and...
Status: RESOLVED MOVED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: unspecified
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: xf86-video-ati maintainers
QA Contact: Xorg Project Team
URL: https://bugs.launchpad.net/bugs/1442378
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-10-10 21:40 UTC by Guilhermino
Modified: 2019-11-19 07:53 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
Small video describing the problem (384.46 KB, text/plain)
2015-10-10 21:40 UTC, Guilhermino 		no flags Details
small video describing the problem. (384.46 KB, video/mp4)
2015-10-10 21:44 UTC, Guilhermino 		no flags Details
attachment-19527-0.html (4.92 KB, text/html)
2015-10-12 15:47 UTC, Guilhermino 		no flags Details
xorg.0.log file (39.15 KB, text/plain)
2015-10-13 13:40 UTC, Guilhermino 		no flags Details
dmesg output file (52.69 KB, text/plain)
2015-10-13 13:41 UTC, Guilhermino 		no flags Details
glxinfo output file (17.54 KB, text/plain)
2015-10-13 13:41 UTC, Guilhermino 		no flags Details
Show Obsolete (2) View All

Description Guilhermino 2015-10-10 21:40:48 UTC 
Created attachment 118802 [details]
Small video describing the problem

This bug was reported on Ubuntu Launchpad at: https://bugs.launchpad.net/bugs/1442378

  On a Compaq Presario 2500 laptop with an Ati IGP 345M graphics card,
  when connected to an external monitor ( SAMSUNG P2470HD - FullHD
  monitor/tv ) through a VGA analog connection, and using the latest
  open radeon driver on Lubuntu 14.04.2 with all the latest updates,
  when using the native resolution ( 1920x1080@60 ) of the monitor, and
  even at lower ones, except the lowest, there are small white lines
  flickering all over the display especially when there is movement in
  the windows or menus, and sometimes even small fragments of the window
  contents appear momentarily across different parts of the monitor.
  This does not happen when using a Windows XP installation on the same
  laptop with the same monitor and with the same D-Sub cable.

  I've also noticed recently that there is some banding noise only discernible
  on a solid background, as in a noisy cable transmission.

  I've tried to install the fglrx driver, but there seems to be none
  available for this card either on the AMD website nor on the
  additional drivers repository of lubuntu. Installing the fglrx driver,
  the card was never recognized. The command "sudo amdconfig --initial"
  returns the error message: "amdconfig: No supported adapters
  detected".
Comment 1 Guilhermino 2015-10-10 21:44:02 UTC 
Created attachment 118803 [details]
small video describing the problem.
Comment 2 Alex Deucher 2015-10-12 14:49:16 UTC 
Does setting radeon.disp_priority=2 on the kernel command line in grub help?
Comment 3 Guilhermino 2015-10-12 15:47:35 UTC 
Created attachment 118843 [details]
attachment-19527-0.html

No it doesn’t. Thanks.

 

De: bugzilla-daemon@freedesktop.org [mailto:bugzilla-daemon@freedesktop.org] 
Enviada: segunda-feira, 12 de Outubro de 2015 15:49
Para: guilherminocorreia@gmail.com
Assunto: [Bug 92419] radeon driver on lubuntu 14.04-15.10 displays white flickering scan lines and occasionally parts of the windows on external monitor

 

Comment # 2 <https://bugs.freedesktop.org/show_bug.cgi?id=92419#c2>  on bug 92419 <https://bugs.freedesktop.org/show_bug.cgi?id=92419>  from  <mailto:alexdeucher@gmail.com> Alex Deucher 

Does setting radeon.disp_priority=2 on the kernel command line in grub help?
  _____  


You are receiving this mail because: 

*	You reported the bug.
Comment 4 Michel Dänzer 2015-10-13 03:42:09 UTC 
Please attach the Xorg.0.log file and the output of dmesg and glxinfo corresponding to the problem.
Comment 5 Guilhermino 2015-10-13 13:40:47 UTC 
Created attachment 118854 [details]
xorg.0.log file
Comment 6 Guilhermino 2015-10-13 13:41:16 UTC 
Created attachment 118855 [details]
dmesg output file
Comment 7 Guilhermino 2015-10-13 13:41:53 UTC 
Created attachment 118856 [details]
glxinfo output file
Comment 8 Guilhermino 2015-10-13 13:49:38 UTC 
Here are the files. I should add, though, that I was incorrect when I said that setting radeon.disp_priority=2 did not change anything as it actually made the problem worse, instead of just a few scan lines there were entire blocks of the screen and the small scan lines garbled up in the background whenever there was any action on screen.
Comment 9 Martin Peres 2019-11-19 07:53:00 UTC 
-- GitLab Migration Automatic Message --

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