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[Bug 538377] Re: HD3450 HDMI output intermittently turns off


This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
lucid' to 'verification-done-lucid'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!

** Tags added: verification-needed-lucid

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  HD3450 HDMI output intermittently turns off

Status in X.org XServer - ATI gfx chipset driver:
Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Lucid:
  Fix Released

Bug description:
  Binary package hint: xserver-xorg-video-ati

  1) lsb_release -rd
  Description:	Ubuntu lucid (development branch)
  Release:	10.04

  2) apt-cache policy xserver-xorg-video-radeon
    Installed: 1:6.12.191+git20100306.e7b41f8c-0ubuntu0sarvatt
    Candidate: 1:6.12.191+git20100306.e7b41f8c-0ubuntu0sarvatt
    Version table:
   *** 1:6.12.191+git20100306.e7b41f8c-0ubuntu0sarvatt 0
          500 http://ppa.launchpad.net lucid/main Packages
          100 /var/lib/dpkg/status
       1:6.12.191-1ubuntu2 0
          500 http://archive.ubuntu.com lucid/main Packages

  3) The HD3450 DVI-HDMI output is connected by HDMI cable to an ASUS
  MK241H monitor.  It should provide a 1920x1200 display + audio via the
  monitor.  When it does so, xrandr reports:

  xrandr -q
  Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 8192 x 8192
  DIN disconnected (normal left inverted right x axis y axis)
  VGA-0 disconnected (normal left inverted right x axis y axis)
  DVI-0 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
     1920x1200      60.0*+
     1920x1080      60.0  
     1600x1200      60.0  
     1680x1050      60.0  
     1600x1024      60.2  
     1400x1050      70.0     60.0     60.0  
     1280x1024      75.0     60.0  
     1440x900       75.0     59.9  
     1280x960       60.0  
     1360x765       59.8  
     1360x768       60.0     59.8  
     1280x800       74.9     59.8  
     1152x864       75.0     75.0     70.0     60.0  
     1280x768       74.9     59.9  
     1280x720       60.0  
     1024x768       75.1     75.0     70.1     60.0  
     832x624        74.6  
     800x600        72.2     75.0     60.3     56.2  
     720x576        50.0  
     848x480        60.0  
     720x480        59.9  
     640x480        75.0     72.8     72.8     72.8     75.0     60.0     59.9     59.9  
     720x400        70.1  

  4) The display generally starts fine, but intermittently, after apparently random times and with random programs running, the display turns off and the monitor reports no HDMI output.  Logging in from another machine, everything appears to be normal and xrandr reports the same as above.  However, there is no HDMI output to the monitor.  This can be fixed by xrandr, using first:

  xrandr -d :0 --output DVI-0 --mode 1024x768

  which makes the display visible again, in the lower resolution, then

  xrandr -d :0 --output DVI-0 --mode 1920x1200

  which restores the original display.  Things then function normally
  until the next random HDMI output failure.

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