<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [NVE4] Desktop freezes & PDISP, PFIFO, PGRAPH and PGR errors" href="https://bugs.freedesktop.org/show_bug.cgi?id=90453#c24">Comment # 24</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [NVE4] Desktop freezes & PDISP, PFIFO, PGRAPH and PGR errors" href="https://bugs.freedesktop.org/show_bug.cgi?id=90453">bug 90453</a> from <a class="email" href="mailto:kb9vqf@pearsoncomputing.net" title="Timothy Pearson <kb9vqf@pearsoncomputing.net>"> Timothy Pearson</a> <pre>(In reply to Mario Barrera from <a href="show_bug.cgi?id=90453#c23">comment #23</a>) > Same issue over here, it is a NVE4 too. I will be using the proprietary > driver from now on until I know better how to help diagnose this. > > [ 7104.402763] nouveau E[ PFIFO][0000:01:00.0] SCHED_ERROR [ CTXSW_TIMEOUT > ] > [ 7104.402770] nouveau E[ PFIFO][0000:01:00.0] PGRAPH engine fault on > channel 7, recovering... > > ...and video freezes forever. Unfortunately I'm seeing the same problem. I have been able to reproduce it very consistently under two circumstances: 1.) Starting a new X11 session when one is already running (using TDM, a fork of the older KDE 3.5 KDM) 2.) Trying to select an OpenGL screensaver. If you go through the list of OpenGL screensavers, occasionally selecting one for full-screen preview, the GPU will hang after going through no more than around a dozen savers. Reclocking status does not matter; fault occurs on both low and high clocks. Kernel 4.1: [ 914.928160] nouveau E[ PFIFO][0000:01:00.0] read fault at 0x0000490000 [PTE] from GR/SCC on channel 0x00fec92000 [matrixview[27252]] [ 914.928169] nouveau E[ PFIFO][0000:01:00.0] PGRAPH engine fault on channel 7, recovering.. Going back to the proprietary drivers is not an option here due to a serious bug in those drivers, so if there's anything I can do to help diagnose this issue please let me know. Thanks!</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>