<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [regression, bisected] [i915] setting initial watermarks on gen 7 IVYBRIDGE causes blank lines on monitor" href="https://bugs.freedesktop.org/show_bug.cgi?id=109477#c14">Comment # 14</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [regression, bisected] [i915] setting initial watermarks on gen 7 IVYBRIDGE causes blank lines on monitor" href="https://bugs.freedesktop.org/show_bug.cgi?id=109477">bug 109477</a> from <a class="email" href="mailto:andreatclist@gmail.com" title="Andrea <andreatclist@gmail.com>"> Andrea</a> <pre>(In reply to Ville Syrjala from <a href="show_bug.cgi?id=109477#c12">comment #12</a>) > Created <a href="attachment.cgi?id=143441" name="attach_143441" title="[PATCH] drm/i915: Disable LP1+ watermarks on Lenovo Thinkpad T431s">attachment 143441</a> <a href="attachment.cgi?id=143441&action=edit" title="[PATCH] drm/i915: Disable LP1+ watermarks on Lenovo Thinkpad T431s">[details]</a> <a href='page.cgi?id=splinter.html&bug=109477&attachment=143441'>[review]</a> [review] > [PATCH] drm/i915: Disable LP1+ watermarks on Lenovo Thinkpad T431s > > This patch should disable LP1+ watermarks on the affected machine > automagically. Please test and also attach the output of intel_watermarks > when using the patch so that I can double check that everything looks > correct. More info: your patch applied on top of the reverted d179b88deb also fixes the issue. > $ git log --oneline > drm/i915: Disable LP1+ watermarks on Lenovo Thinkpad T431s > Revert "drm/i915/fbdev: Actually configure untiled displays" intel_watermarks: (good) WM_PIPE_A = 0x000b0000 WM_PIPE_B = 0x00000000 WM_PIPE_C = 0x00000000 WM_LP1 = 0x00000000 WM_LP2 = 0x00000000 WM_LP3 = 0x00000000 WM_LP1_SPR = 0x00000000 WM_LP2_SPR = 0x00000000 WM_LP3_SPR = 0x00000000 ARB_CTL = 0xd6663056 ARB_CTL2 = 0x00000000 WM_PIPE_A: primary=11, cursor=0, sprite=0 WM_PIPE_B: primary=0, cursor=0, sprite=0 WM_PIPE_C: primary=0, cursor=0, sprite=0 WM_LP1: disabled, latency=0, fbc=0, primary=0, cursor=0, sprite=0 WM_LP2: disabled, latency=0, fbc=0, primary=0, cursor=0, sprite=0 WM_LP3: disabled, latency=0, fbc=0, primary=0, cursor=0, sprite=0 Primary A trickle feed = disabled Sprite A trickle feed = enabled Primary B trickle feed = disabled Sprite B trickle feed = enabled Primary C trickle feed = disabled Sprite C trickle feed = enabled DDB partitioning = 1/2 FBC watermark = enabled</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>