On Wed, Jun 2, 2010 at 9:53 AM, Toan <[email protected]> wrote: > Hi > > I don't know how to force a modeline for my HDTV. I hope someone can help me. > > I have a Kubuntu 10.04, xorg-edger PPA latest packages, ATI Xpress > X1250 built-in > graphic chip. For whatever the reasons, the default 1280x720 mode used by the > the ati driver is wrong. The TV goes black when I select "1280x720" mode. > > According to the xorg.0.log (attached), there are 2 "1280x720" modes available > (with same names for some weird reasons) : > > [ 21.523] (II) RADEON(0): Modeline "1280x720"x60.0 74.44 1280 > 1336 1472 1664 720 721 724 746 -hsync +vsync (44.7 kHz) > [ 21.523] (II) RADEON(0): Modeline "1280x720"x60.0 74.25 1280 > 1390 1430 1650 720 725 730 750 +hsync +vsync (45.0 kHz) > > Somehow, xserver insists on using the first mode. I want to force it > to choose the > second one, but don't know how to. I'm sure that the second one works because > I typed the following > > xrandr --newmode "720p" 74.25 1280 1390 1430 1650 720 725 730 750 +HSync > +VSync > xrandr --addmode DVI-0 720p > xrandr --output DVI-0 --mode 720p > > and it works!. >
Add that modeline and a preferred mode directive to the monitor section in your xorg.conf. Set the Identifier of the monitor section to DVI-0 so that that monitor section will be associated with the DVI-0 port on your card. See section III.5 of this page: http://wiki.debian.org/XStrikeForce/HowToRandR12 Alex > Anyhelp would be greatly appreciated since I'm fighting this for > several days already > and nearly gaving up. 1080p works but XBMC is noticeably slow at that > resolution. > XBMC is much smoother at 1024x768 so I'm trying to force 720p > as my default mode. xrandr doesn't work for OpenGL program. > > Thanks > > Toan > > _______________________________________________ > xorg-driver-ati mailing list > [email protected] > http://lists.x.org/mailman/listinfo/xorg-driver-ati > > _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
