Re: blank external DVI on Thinkpad T40

2009-02-25 Thread Alex Deucher
On Wed, Feb 25, 2009 at 2:12 PM, Gilad Arnold arn...@cs.berkeley.edu wrote: Hi, I've been running Xorg with Gentoo Linux on my T40/T41 for a while now. In the past I was able to use my DVI monitor to its full 1920x1200 resolution with hardware acceleration using the open-source radeon driver

Re: blank external DVI on Thinkpad T40

2009-02-25 Thread Gilad Arnold
Alex, thanks for the quick reply. On Wed, Feb 25, 2009 at 02:55:49PM -0500, Alex Deucher wrote: Sounds like display underflow. I wonder what that is and what causes it? Try disabling the LVDS if you aren't using it. I tried adding this to xorg.conf: Section Monitor Identifier LVDS

Re: blank external DVI on Thinkpad T40

2009-02-25 Thread Alex Deucher
On Wed, Feb 25, 2009 at 3:11 PM, Gilad Arnold arn...@cs.berkeley.edu wrote: Alex, thanks for the quick reply. On Wed, Feb 25, 2009 at 02:55:49PM -0500, Alex Deucher wrote: Sounds like display underflow. I wonder what that is and what causes it? Not enough memory bandwidth for everything you

Re: blank external DVI on Thinkpad T40

2009-02-25 Thread Gilad Arnold
On Wed, Feb 25, 2009 at 03:32:58PM -0500, Alex Deucher wrote: Also, IIRC, the DVI port on the IBM docking station is only supposed to support a max resolution of 1280x1204 or 1600x1200. It might be a limitation of DVI traces or connector in the docking station. I'm not sure. As I said, the

Re: blank external DVI on Thinkpad T40

2009-02-25 Thread Gilad Arnold
Also, let me know if you'd like to see my xorg.conf or log file. Many thanks for your help so far. Gilad On Wed, Feb 25, 2009 at 12:56:56PM -0800, Gilad Arnold wrote: On Wed, Feb 25, 2009 at 03:32:58PM -0500, Alex Deucher wrote: Also, IIRC, the DVI port on the IBM docking station is only