[Bug 317144] Re: external monitor blanks on 10 second cycle
*** This bug is a duplicate of bug 278471 *** https://bugs.launchpad.net/bugs/278471 Great that it solved the problem for you. I'm marking this as a duplicate of bug 278471. The exact type of blinking may be different between different monitors, but the real problem is that KDE keeps probing the DDC information (even though information is available that says that the screen will blank when this is done). ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: Incomplete => Confirmed ** This bug has been marked a duplicate of bug 278471 Screen flickers or blanks every 10 s with KDE4 -- external monitor blanks on 10 second cycle https://bugs.launchpad.net/bugs/317144 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 317144] Re: external monitor blanks on 10 second cycle
Geir - That's it. I ran both tests that you sugggested, and saw both indicators. And shutting down the RandR service did, indeed, stop the blinking - the display worked well. I think I can confirm that my circumstances sound like bug 278471, though with the difference that I'm seeing blanking, not artifacts. -- external monitor blanks on 10 second cycle https://bugs.launchpad.net/bugs/317144 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 317144] Re: external monitor blanks on 10 second cycle
Are you using KDE? I suspect this is (yet another) duplicate of bug 278471. Basically, a few monitors go black when information about it is being probed (known as DDC or EDID). The current KDE version has a daemon that probes this information every 10 seconds. Some lines are also dumped to Xorg.0.log at the same time, and you seem to have the same lines repeating over and over again in that file (that happens to everyone, see bug 299492, but only some monitors blink). To verify that this is what happens, you can run `while true; do wc -l /var/log/Xorg.0.log; sleep 1; done` (without ``) This will show print the number of lines in Xorg.0.log every second. You can stop it with Ctrl+C. If it increases just when the monitor blinks, it's a good indication that this is the culprit. Another detail I noticed is that when I run `sudo get-edid | parse-edid` (you will need the read-edid package for this) one of the lines I get is Screen is not blanked during DDC transfer So it seems the montor has a means to advertise that it is blanked during DDC transfers. Possibly yours will do that. As a possible workaround, you can take a look at the first comment of bug 296481. If you don't use KDE or otherwise don't think this is duplicate of bug 278471, please include the output of the command `lspci -vvnn`. ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Incomplete -- external monitor blanks on 10 second cycle https://bugs.launchpad.net/bugs/317144 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 317144] Re: external monitor blanks on 10 second cycle
** Attachment added: "xorg.conf" http://launchpadlibrarian.net/21213618/xorg.conf -- external monitor blanks on 10 second cycle https://bugs.launchpad.net/bugs/317144 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 317144] Re: external monitor blanks on 10 second cycle
** Attachment added: "Xorg.0.log" http://launchpadlibrarian.net/21213648/Xorg.0.log -- external monitor blanks on 10 second cycle https://bugs.launchpad.net/bugs/317144 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
