ubuntu-x-swat team mailing list archive

[Robert Hooker <sarvatt@xxxxxxxxx>]

** Description changed:

  I am pretty sure that this is an old bug re-incarnated but I do not find
  the problem described in terms that seem completely similar. I am
  running ubuntu 9.10. using Nvidia 185 driver on an i7 cpu and asus mobo
  with out over-clocking anything.  The hardware seems good.  Here is the
  problem:
  
  When I switch out of X into a VT (e.g. ctrl-alt-f1), upon switching back
  to X, the X screen is visible for a few seconds (the mouse can be moved)
  but the screen acts as though it is going to sleep; that is, the video
  signal is briefly displayed but the display device notes a change in the
  video signal and the screen goes blank from signal loss.
  
  I do not think that X is crashing though since the mouse and keyboard
  still work -- I can go back to the same VT (the VT's all seem to work)
  and then again attempt to go back to X.  When I do this, the video
  signal _briefly_ returns but again the display device soon notes a
  change in the video signal and the screen goes blank from signal loss.
  It is as though X is waking up but then going back to sleep.  Also, if I
  momentarily press the computer power button, the power-off applet
  apparently runs since if I then press enter the system powers down (and
  rebooting is the only "fix", at least I tried killing X but this does
  not seem to help.).
  
  The problem can also occur if the video signal changes mode in some way
  (like if I turn of GPU screen sizing).  Also if the computer is left
  idle and times out, the display will not come back (though the power-
  button-applet remains working).  This seems to be ACPI related.  I did
  not yet try completely disabling ACPI in the bios.  This is not the
  first time this has happened to me with 9.10.
  
  In fact, if I re-install 9.10, the problem goes away but will eventually
  return.  I am supposing that some change to some configuration occurs
  but I am not knowingly making such a change.  The only thing that I can
  think of that could cause the problem is that I am trying to get Dead
  Space to run (which it resolutely refuses to do).  I would really like
  to know what is causing this.  It is really annoying to say the least
  (and maybe keeping me from playing Dead Space).
  
  One other thing is that I am using a TV with HDMI control (available but
  not enabled).  Maybe the TV is telling the video card to power down?  I
  have no other ready display to test as yet.
+ 
+ 
+ Architecture: amd64
+ DistroRelease: Ubuntu 9.10
+ InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
+ MachineType: System manufacturer System Product Name
+ NonfreeKernelModules: nvidia
+ Package: nvidia-graphics-drivers-180 (not installed)
+ ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.31-20-server root=UUID=387e5783-df62-4a94-9499-40c8a5eea688 ro quiet splash
+ ProcEnviron:
+  SHELL=/bin/bash
+  LANG=en_US.UTF-8
+ ProcVersionSignature: Ubuntu 2.6.31-20.58-server
+ RelatedPackageVersions:
+  xserver-xorg 1:7.4+3ubuntu10
+  libgl1-mesa-glx 7.6.0-1ubuntu4
+  libdrm2 2.4.14-1ubuntu1
+  xserver-xorg-video-intel 2:2.9.0-1ubuntu2.1
+  xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
+ Uname: Linux 2.6.31-20-server x86_64
+ UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
+ dmi.bios.date: 09/11/2009
+ dmi.bios.vendor: American Megatrends Inc.
+ dmi.bios.version: 0804
+ dmi.board.asset.tag: To Be Filled By O.E.M.
+ dmi.board.name: P6T WS PRO
+ dmi.board.vendor: ASUSTeK Computer INC.
+ dmi.board.version: Rev 1.xx
+ dmi.chassis.asset.tag: Asset-1234567890
+ dmi.chassis.type: 3
+ dmi.chassis.vendor: Chassis Manufacture
+ dmi.chassis.version: Chassis Version
+ dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0804:bd09/11/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6TWSPRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
+ dmi.product.name: System Product Name
+ dmi.product.version: System Version
+ dmi.sys.vendor: System manufacturer
+ fglrx: Not loaded
+ system:
+  distro: Ubuntu
+  architecture: x86_64kernel: 2.6.31-20-server

-- 
switching from X to VT then back to X not working (ACPI related?)
https://bugs.launchpad.net/bugs/526698
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