[Bug 17210] New: coloured horizonal lines on RS690

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=17210

           Summary: coloured horizonal lines on RS690
           Product: xorg
           Version: unspecified
          Platform: Other
               URL: https://bugs.launchpad.net/bugs/257392
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: bugzi07.fdo.tormod at xoxy.net
         QAContact: xorg-team at lists.x.org


Originally reported in Ubuntu: "Funky blinking coloured lines horizontally on
the screen. Appears at log in and on the desktop."

This was not a problem in Hardy (radeon 6.8.0), but came with Intrepid (radeon
6.9.0). Same with current git. I suspect it is a PLL issue. The logs are
different:

Intrepid (bad):
freq: 69300000
best_freq: 69298571
best_feedback_div: 813
best_ref_div: 12
best_post_div: 14
(II) RADEON(0): crtc(0) Clock: mode 69300, PLL 69290
(II) RADEON(0): crtc(0) PLL : refdiv 12, fbdiv 0x32D(813), pdiv 14

Hardy (good):
freq: 69300000
best_freq: 69313613
best_feedback_div: 1152
best_ref_div: 14
best_post_div: 17
(II) RADEON(0): crtc(0) Clock: mode 69300, PLL 69310
(II) RADEON(0): crtc(0) PLL : refdiv 14, fbdiv 0x480(1152), pdiv 17

See Ubuntu bug for screenshots, for example
http://launchpadlibrarian.net/16911957/IMG_0696.JPG


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