[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Bug#465864: xserver-xorg-video-ati: xserver freezes the computer on startup



On Thu, 06 Mar 2008 01:58:38 +0100, Alex Deucher <alexdeucher@gmail.com> wrote:

On Wed, Mar 5, 2008 at 11:26 AM, Jiří Paleček <jpalecek@web.de> wrote:
Hello,

sorry that I mystified you in the last email, it seems that I've done the
 test with a different version if the driver (not 6.8.0). The correct
 results are: 82 Hz works, 84 and 86 not.

The base problem here is that the pll algorithm is not able to find
clock as close as it would like to the desired frequency so it fails
and you end up with an invalid divders programmed to the hw which
causes the hang.  I guess there are two options: widen the error range
or try a slightly different clock if it fails to find valid dividers.

Ahuh, so you say that the frequencies in the range 175 MHz - 200 MHz are impossible to create on my card, so 184 MHz fails. Well, it really seems so. But why not choose the 175 MHz then, and do it like that (see patch).

You may wanna optimize it a bit, but it starts on my machine so it may be unnecessary.

Regards
    Jiri Palecek

Attachment: radeon.patch
Description: Binary data


Reply to: