<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - 845G: crtc active state doesn't match with hw state" href="https://bugs.freedesktop.org/show_bug.cgi?id=64764#c14">Comment # 14</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - 845G: crtc active state doesn't match with hw state" href="https://bugs.freedesktop.org/show_bug.cgi?id=64764">bug 64764</a> from <a class="email" href="mailto:mlsemon35@gmail.com" title="mlsemon35@gmail.com">mlsemon35@gmail.com</a> <pre>(In reply to <a href="show_bug.cgi?id=64764#c13">comment #13</a>) > Can you please grab the latest intel-gpu-tools git from > <a href="http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/">http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/</a> and then grab the > output of intel_reg_dumper both while the screen is on and once it's off > (i.e. after the WARN hit dmesg)? > > If you don't have ssh to do grab the 2nd dump you can do > > xset dpms force off ; sleep 2; intel_reg_dumper > reg_dump.off It looks like I did not mention that the monitor comes back up, as if `xset dpms force off` does only a temporary blanking of the screen, barely 2 seconds. intel-gpu-tools-1.3 is part of slackware-current, so I used it, and it gave me this (as root)... root:~$ xset dpms force off; sleep 2; intel_reg_dumper > dumper.out Gen2/3 Ranges are not supported. Please use unsafe access.Aborted ...which I saw last year when I compiled intel-gpu-tools from source and tried to use it. As for tools that might work here, there's a /sys/kernel/debug/dri directory available, and the i915 tracers are available. After I go back home tomorrow, serial console/capture will be available as well. This DRM debug and DPMS debugging is causing X11 to become unstartable sometimes. It acts like it's going to start Xfce but stops at a blank screen. When I switch back to the console from which I typed `startx`, this shows up over and over: __kgem_bo_map__gtt: failed to retrieve GTT offset for handle=26: 5 Is this a message from the Intel X11 driver? Ctrl-c stops X11 and the printing of these messages, but it takes a reboot in order to use X11 again. Thanks for bearing with me! [Reminder to self: More coffee is needed in the morning.] Michael</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>