Created attachment 25149 [details] [review] Xorg log I have a Samsung 215TW monitor connected to the DVI output of a radeon HD 3200 IGP, all was working well till the recent changes to the pll code in git master. Now I have random screen blanking and random noise in the picture. The screen blanking is at it's worst when playing a 720p movie, then the screen will blank up to several times a minute. The offending commit: commit 24e4b73b4fbbb2c790e6120ede3caaa4e7e58359 Author: Alex Deucher <alexdeucher@gmail.com> Date: Wed Apr 22 11:42:18 2009 -0400 radeon pll: add support for fractional feedback divs Differences in the Xorg.0.log before(-) and after the commit(+). freq: 146250000 -best_freq: 146243000 -best_feedback_div: 817 -best_ref_div: 10 -best_post_div: 8 +best_freq: 146249974 +best_feedback_div: 786 +best_frac_feedback_div: 4 +best_ref_div: 11 +best_post_div: 7 (II) RADEON(0): crtc(0) Clock: mode 146250, PLL 146240 -(II) RADEON(0): crtc(0) PLL : refdiv 10, fbdiv 0x331(817), pdiv 8 +(II) RADEON(0): crtc(0) PLL : refdiv 11, fbdiv 0x312(786), fracfbdiv 4, pdiv 7
disabled for now: abd565ae71d9844d5afcd658628ca7778ce26ab1
I've incorporated Tom's patch (bug 22229) into xf86-video-ati git master. Please test and let me know if you have any problems.
With the latest git it's broken again. Working situation: best_freq: 146243000 Does not work with best_freq: 146249974 As best_freq: 146249974 is lower than freq: 146250000, the patch doesn't do anything for me.
Ok. I've only enabled the code on rs6xx chips for now. 808c90a24c48da7fa97e15e2f12be5bb8fd8cc96
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