** 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 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
