<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [IVB cpu eDP] KMS Black Screen (link training)" href="https://bugs.freedesktop.org/show_bug.cgi?id=64880#c11">Comment # 11</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [IVB cpu eDP] KMS Black Screen (link training)" href="https://bugs.freedesktop.org/show_bug.cgi?id=64880">bug 64880</a> from <a class="email" href="mailto:imre.deak@gmail.com" title="Imre Deak <imre.deak@gmail.com>"> Imre Deak</a> <pre>(In reply to <a href="show_bug.cgi?id=64880#c10">comment #10</a>) > Thanks Imre; attached! > > I also tried the newest nightly build, no change. Can't see yet the problem :/ There are two non-fatal issues in dmesg: - Corrupt EDID. This isn't fatal as the driver picks the mode from VBT instead, I assume it's the correct one: "1920x1200" 0 154000 1920 1964 1968 2080 1200 1209 1210 1234 0x8 0xa - Link training CR failure. This isn't fatal either, since we still do channel EQ, which succeeds. >From the reg dump the display seems to be off, so I wonder if X is running at all, or if the screen is just blanked. We'd need Xorg.0.log for more details. Could you run 'sudo tests/testdisplay -s 20 > /tmp/out 2>&1' from igt? It should enable the screen and show some test pattern for 20 secs. You first need to stop X if it's running, or VT switch away from it. Then while the test is running, please take a dmesg and an intel_reg_dumper snapshot from a remote terminal and attach these with the xorg.0.log and /tmp/out.</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>