My TV is a Philips 19PFL4322. It's native resolution is 1440×900 . My laptop's graphics card is a ATI Radeon HD 3650, using the open source radeon
driver on X.org server 1.10.
If I connect them via VGA in Linux, or via anything in Windows, it displays correctly at that resolution.
If I connect it via HDMI in Linux, it defaults to a 1024×768 resolution, and GUI tools will only allow me to set it up to 1360×768, all of which look pretty bad on it.
If I force the issue by generating a modeline using cvt 1400 900
and then setting that as the mode using xrandr, I get no output on that monitor.
When connnected via VGA, Linux correctly identifies it as a Philips 19" TV. When connected via HDMI, it misidentifies it as an 18" TV.
How can I get the monitor to display correctly on Linux using HDMI?
EDIT: xrandr output. VGA-0
and HDMI-0
are both my TV, LVDS
is my laptop display, 1280×960 which is listed under HDMI-0 is not a valid output for my TV. 1440×900 which isn't listed is a valid output.
Screen 0: minimum 320 x 200, current 2880 x 900, maximum 8192 x 8192
VGA-0 connected 1440x900+1440+0 (normal left inverted right x axis y axis) 410mm x 257mm
1440x900 59.9*+
1360x768 59.8
1280x720 60.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 72.8 75.0 66.7 60.0
720x400 70.1
LVDS connected 1440x900+0+0 (normal left inverted right x axis y axis) 367mm x 23000mm
1440x900 60.8*+
1280x854 59.9
1280x800 59.8
1280x720 59.9
1152x768 59.8
1024x768 59.9
800x600 59.9
848x480 59.7
720x480 59.7
640x480 59.4
HDMI-0 connected (normal left inverted right x axis y axis)
1920x1080i 25.0 +
1280x960 60.0
1360x768 59.8
1280x768 59.9
1280x720 60.0
1024x768 75.1 70.1 60.0
800x600 72.2 75.0 60.3 56.2
640x480 72.8 75.0 66.7 60.0
720x400 70.1
Best Answer
You could try the closed source ATI driver (that is what I eventually did :-( ) But there I had to increase the Virtual resolution in order to get the big screen working.
I wanted to have sync to vblank on my HDMI output and I couldn't find any way to do this with the open source drivers. That's why I eventually went to the tainted ones.