Ubuntu does not recognize many LCD TV's

[kikbguy]

I have a 42'' LCD TV and when I boot up Ubuntu 9.10 and below (8.04-9.10) the screen is always shifted because Ubuntu does not recognize the correct resolution of my LCD TV. Then, I connected my computer to my spare 20'' LCD monitor and everything works perfectly and the screen image is centered with no need for me to adjust the screen resolution.
In Ubuntu 10.04(both alpha and beta versions), when I boot up with my 42'' LCD TV the monitor says "no signal" and then shuts off. I then connected my computer to that same spare 20'' LCD monitor, rebooted ubuntu 10.04, and everything worked perfectly. (I believe the fact that 10.04 does not work at all with the LCD TV has something to do with noveau being used by default instead of the nvidia driver because I have the same problem with Fedora (which uses noveau by default) but no problem with Opensuse or windows)

Many people have reported the same "no signal" bug with LCD TV's booting ubuntu that I have run in to in the tech support forums. I just never realized this problem was due to Ubuntu running on an LCD TV (32"+) instead of running on an LCD computer monitor (20"). Please let me know if you have any questions because Ubuntu rocks and I want to help them get rid of these bugs. Thanks - Adam

 (I'm not sure if this qualifies as a security vulnerability but I suppose not having acess to the Ubuntu OS could be a security vulnerability, so I will check the security box and I apologize if this was an incorrect assumption)

[Bryce Harrington (bryce)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command in a terminal after reproducing the issue, and it it will automatically gather debugging information needed for this bug:

  apport-collect 545648

This is really a modesetting issue, so the bug should be filed against linux, but we can do the initial triaging here.

[kikbguy (tulaneadam21)]

Architecture: i386
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: HP Pavilion 061 DT039A-ABA A465W
NonfreeKernelModules: nvidia
Package: xserver-xorg-video-nouveau (not installed)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-20-generic root=UUID=90e1b459-97eb-4b86-82a6-8f76dae5be4d ro quiet splash
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-20.58-generic
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-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev root sambashare
XorgLogOld:

dmi.bios.date: 11/27/2003
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 3.05
dmi.board.name: Kamet2
dmi.board.vendor: ASUSTek Computer INC.
dmi.board.version: 2.01
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr3.05:bd11/27/2003:svnHPPavilion061:pnDT039A-ABAA465W:pvr0nB1211RE101KAME210:rvnASUSTekComputerINC.:rnKamet2:rvr2.01:cvnHewlett-Packard:ct3:cvr:
dmi.product.name: DT039A-ABA A465W
dmi.product.version: 0nB1211RE101KAME210
dmi.sys.vendor: HP Pavilion 061
fglrx: Not loaded
system:
 distro: Ubuntu
 architecture: i686kernel: 2.6.31-20-generic

[kikbguy (tulaneadam21)]

Okay, I just did the "apport-collect 545648" command in terminal and
uploaded the necessary files to launchpad. If there is any other way I can
help please let me know. Thanks - Adam.

[kikbguy (tulaneadam21)]

Architecture: i386
CurrentDmesg:
 [ 38.604782] agpgart-via 0000:00:00.0: AGP 3.5 bridge
 [ 38.604801] agpgart-via 0000:00:00.0: putting AGP V3 device into 8x mode
 [ 38.604868] nvidia 0000:01:00.0: putting AGP V3 device into 8x mode
 [ 47.344044] eth0: no IPv6 routers present
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: HP Pavilion 061 DT039A-ABA A465W
NonfreeKernelModules: nvidia
Package: xserver-xorg-video-nouveau (not installed)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-20-generic root=UUID=90e1b459-97eb-4b86-82a6-8f76dae5be4d ro quiet splash
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-20.58-generic
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-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev root sambashare
XsessionErrors:
 (gnome-settings-daemon:1586): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (nautilus:1701): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (polkit-gnome-authentication-agent-1:1717): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (firefox:1791): GLib-WARNING **: g_set_prgname() called multiple times
dmi.bios.date: 11/27/2003
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 3.05
dmi.board.name: Kamet2
dmi.board.vendor: ASUSTek Computer INC.
dmi.board.version: 2.01
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr3.05:bd11/27/2003:svnHPPavilion061:pnDT039A-ABAA465W:pvr0nB1211RE101KAME210:rvnASUSTekComputerINC.:rnKamet2:rvr2.01:cvnHewlett-Packard:ct3:cvr:
dmi.product.name: DT039A-ABA A465W
dmi.product.version: 0nB1211RE101KAME210
dmi.sys.vendor: HP Pavilion 061
fglrx: Not loaded
system:
 distro: Ubuntu
 architecture: i686kernel: 2.6.31-20-generic

[Chris Halse Rogers (raof)]

I note that your logs indicate that you're using the binary nvidia drivers. Do they work with your TV?

If nouveau fails to properly set the mode, then what we really need is the apport-collect data when the TV is plugged in and the nouveau drivers are in use. You should be able to collect these either by using SSH to log in remotely, or by connecting the TV and a second monitor to the computer so that you can see what's happening.

[Bryce Harrington (bryce)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.