Experimenting modesetting in radeon driver

Dave Airlie airlied at gmail.com
Thu Nov 30 19:31:46 PST 2006

You should really look at randr-1.2 and the changes to the radeon
driver that are required for it.... I tried doing what you did a few
years ago and it was a lot of pain,... the latest radeon driver in git
is a lot better, but the one I'm working on in my git tree is a lot

I'd hope by Xmas to have a randr1.2 radeon driver mostly done....


On 12/1/06, Henry Zhao <henry.zhao at sun.com> wrote:
> I treawked randr code a little bit (both in server layer and xfree86
> layer), and added RADEONDriverFunc() with a new function type
> RR_PROBE_MODE to radeon driver to reprobe monitor configuration and
> reinitialize modes, then I was able to do limited modesetting adapting
> monitor changes.
> Triggered by randr command or screen resolution change in GNOME, I
> was able to successfully change modes with the following sequence:
> (note the sequence starts from single mode)
> single mode -> merged mode (adding a monitor) -> single mode
> (removing a monitor) -> merged mode (adding a monitor) -> ...
> However, if I started the sequence from merged mode:
> merged mode -> single mode (removing a monitor)
> then the screen got garbled. Check the log file for mode numbers
> nothing appeared wrong.
> Anyone can shed light on what's wrong here ? Thanks.
> -Henry
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