<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Horizontal lines in radeon driver on kernel 3.15 and upwards" href="https://bugs.freedesktop.org/show_bug.cgi?id=87682#c14">Comment # 14</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Horizontal lines in radeon driver on kernel 3.15 and upwards" href="https://bugs.freedesktop.org/show_bug.cgi?id=87682">bug 87682</a> from <a class="email" href="mailto:madeforspam@telfort.nl" title="Thom <madeforspam@telfort.nl>"> Thom</a> <pre>(In reply to Chris Bainbridge from <a href="show_bug.cgi?id=87682#c13">comment #13</a>) > This might be <a href="https://bugzilla.kernel.org/show_bug.cgi?id=75241">https://bugzilla.kernel.org/show_bug.cgi?id=75241</a> - there is > one line patch there from Christian König but it doesn't look like it was > ever merged. I did a git fetch origin , git reset --hard origin/master to get a plain unaltered current kernel again (4.6.0-rc7+) I changed the one line in ./drivers/gpu/drm/radeon/radeon_display.c: fb_div_max = pll->max_feedback_div; to: fb_div_max = min(pll->max_feedback_div, 512u); according to: <a href="https://bugzilla.kernel.org/attachment.cgi?id=142281">https://bugzilla.kernel.org/attachment.cgi?id=142281</a> (linked from <a href="https://bugzilla.kernel.org/show_bug.cgi?id=75241">https://bugzilla.kernel.org/show_bug.cgi?id=75241</a>) and compiled (make && make modules_install install) Assuming that i did not make a mistake or overlooked something; this patch didn't work, lots of noise/artefacts. Timings seem identical to the other "bad" compilations, i.e. nothing changed: (bootparam drm.debug=4) [drm:radeon_compute_pll_avivo] 69300 - 69290, pll dividers - fb: 135.5 ref: 2, post 14 too bad, but it was absolutely worth to try. I wonder if "fb" and "post" are consequently too low....is that possible ?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>