<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Delay in skl_disable_plane() causes a system freeze" href="https://bugs.freedesktop.org/show_bug.cgi?id=104975#c61">Comment # 61</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Delay in skl_disable_plane() causes a system freeze" href="https://bugs.freedesktop.org/show_bug.cgi?id=104975">bug 104975</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>(In reply to Ville Syrjala from <a href="show_bug.cgi?id=104975#c60">comment #60</a>) > (In reply to Azhar from <a href="show_bug.cgi?id=104975#c59">comment #59</a>) > > (In reply to Ville Syrjala from <a href="show_bug.cgi?id=104975#c58">comment #58</a>) > > > It looks like I managed to avoid the planes staying on past their bedtime > > > with the following branch: > > > git://github.com/vsyrjala/linux.git double_buffer_ctl_ddb_wa > > > > > > I hope it will also prevent the hard hangs. Please test. > > > > > > With this patch on Linux-stable 4.15.18 without the support of IPC on BXT+, > > still causes hard hangs. > > Argh. OK, so looks like what I had there is only sufficient for linear > buffers for some unknown reason. To make the planes appear to work correctly > with tiled buffers I had to frob the double buffer disable bits some more > between the ddb/wm and plane programming steps. > > I pushed an additional commit to the same branch: > git://github.com/vsyrjala/linux.git double_buffer_ctl_ddb_wa > > Please test again. Actually never mind. I still seems to fail here. Just makes a bit harder to hit :(</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 QA Contact for the bug.</li> </ul> </body> </html>