[mythtv-users] Xorg , modelines and ps3

James Crow james at ultratans.com
Wed Jul 16 20:45:19 UTC 2008

On Wed, 2008-07-16 at 12:24 +0100, Adam Skinner wrote:
> Hello all, 
> I have a Hitatchi 42' LCD tv that I am trying to setup mythtv frontend /
> X to run at 1080p. 
> Its a box connected to an nvidia card using DVI. When not using much in
> the xorg.conf file , it auto selects 720p pretty easily. 
> However, I am trying to setup 1080p. Despite using a few of the nvidia
> options it refuses to go into 1080p mode. 
> My ps3 also runs linux, and this is able to drive the display at 1080p.
> So looking at the xorg.0.log I found a modeline that I thought would
> work. 
> However, when using this modeline with the machine I am trying to setup
> at 1080p - it doesn't work. The display only shows half the screen and
> it looks a bit weird. 
> Here is some of the xorg.0.log from the ps3. 
> (II) Running in FRAMEBUFFER Mode
> (**) SPU_FBDEV(0): Depth 24, (--) framebuffer bpp 32
> (==) SPU_FBDEV(0): RGB weight 888
> (==) SPU_FBDEV(0): Default visual is TrueColor
> (==) SPU_FBDEV(0): Using gamma correction (1.0, 1.0, 1.0)
> (II) SPU_FBDEV(0): hardware: ps3fb (video memory: 18368kB)
> (**) SPU_FBDEV(0): Option "ShadowFB" "false"
> (II) SPU_FBDEV(0): checking modes against framebuffer device...
> (EE) SPU_FBDEV(0): FBIOPUT_VSCREENINFO: Invalid argument
> (II) SPU_FBDEV(0):      mode "1024x768" test failed
> (II) SPU_FBDEV(0): checking modes against monitor...
> (--) SPU_FBDEV(0): Virtual size is 1920x1080 (pitch 1920)
> (**) SPU_FBDEV(0):  Built-in mode "current": 148.3 MHz, 67.4 kHz, 59.9
> Hz
> (II) SPU_FBDEV(0): Modeline "current"  148.34  1920 1964 2052 2200  1080
> 1084 1089 1125 bcast -hsync -vsync -csync
> (==) SPU_FBDEV(0): DPI set to (100, 100)
> (II) Loading sub module "fb"
> (II) LoadModule: "fb"
> The ps3 uses the framebuffer, where as the machine I am trying to setup
> uses nvidia. Any suggestions on how to resolve?

One thing that has helped me tremendously is to run X with the
--logverbose 6 option. When fighting with my TV and others I usually try

startx -- -logverbose 6

Depending on how your distro does things you may get only a blank X
screen (the one with the little black checkerboard pattern). If so just
kill X and go look in the log file. If your TV is passing valid EDID
info you should see the modes it says it can handle as well as why any
of them are being rejected.

I have no specific knowledge of the ps3 or your TV model, but this is
how I have gotten a couple of older, very picky sets running at
acceptable resolution.


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