<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - External monitor shows no signal after unplugging and plugging the cable back into dock" href="https://bugs.freedesktop.org/show_bug.cgi?id=101462#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - External monitor shows no signal after unplugging and plugging the cable back into dock" href="https://bugs.freedesktop.org/show_bug.cgi?id=101462">bug 101462</a> from <a class="email" href="mailto:ethan.hsieh@canonical.com" title="Ethan Hsieh <ethan.hsieh@canonical.com>"> Ethan Hsieh</a> <pre>Created <a href="attachment.cgi?id=131994" name="attach_131994" title="Xorg.0.log (compile xserver-xorg-video-intel with --enable-debug=full)">attachment 131994</a> <a href="attachment.cgi?id=131994&action=edit" title="Xorg.0.log (compile xserver-xorg-video-intel with --enable-debug=full)">[details]</a> Xorg.0.log (compile xserver-xorg-video-intel with --enable-debug=full) After compiling xserver-xorg-video-intel with --enable-debug=full, I got the following error messgaes. X restarted after I plugged the cable back into the dock. log_0615-3-enable_x_debug/Xorg.0.log.old: [ 105.305] (EE) Backtrace: [ 105.306] (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4e) [0x561c931aaade] [ 105.306] (EE) 1: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fc6bc498000+0xc21d9) [0x7fc6bc55a1d9] [ 105.306] (EE) 2: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fc6bc498000+0xc33e7) [0x7fc6bc55b3e7] [ 105.306] (EE) 3: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fc6bc498000+0xd4607) [0x7fc6bc56c607] [ 105.306] (EE) 4: /usr/lib/xorg/Xorg (xf86Wakeup+0x197) [0x561c9308d557] [ 105.306] (EE) 5: /usr/lib/xorg/Xorg (WakeupHandler+0x6d) [0x561c9305095d] [ 105.306] (EE) 6: /usr/lib/xorg/Xorg (WaitForSomething+0x1ef) [0x561c931a781f] [ 105.306] (EE) 7: /usr/lib/xorg/Xorg (0x561c92ff8000+0x53b8e) [0x561c9304bb8e] [ 105.307] (EE) 8: /usr/lib/xorg/Xorg (0x561c92ff8000+0x57dd3) [0x561c9304fdd3] [ 105.307] (EE) 9: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf0) [0x7fc6c0425830] [ 105.307] (EE) 10: /usr/lib/xorg/Xorg (_start+0x29) [0x561c9303a049] Fatal server error: [ 105.307] (EE) sna_output_add:4850 assertion 'to_sna_output(output)->id == 0' failed</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>