Public bug reported: Hi,
I've Ubuntu 14.04 LTS installed on a Toshiba Satellite laptop (it has an integrated Intel video card and an AMD Radeon video card). After installation I was using an external monitor screen connected to the laptop through the HDMI laptop's output. Everything worked fine until the Ubuntu's Software Updater showed me some pending updates. I've made the updates and the next time i restarted the laptop, there was no way to detect the external screen. After googling a lot about this, i couldn't find a solution to my problem. This is the output of the xrandr command: Screen 0: minimum 8 x 8, current 1366 x 768, maximum 32767 x 32767 eDP1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm 1366x768 60.0*+ 1360x768 59.8 60.0 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VIRTUAL1 disconnected (normal left inverted right x axis y axis) As you see, the HDMI output is not shown, but it was shown until the Ubuntu update. I think this is the same problem reported at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1490689 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.16.0-49-generic 3.16.0-49.65~14.04.1 ProcVersionSignature: Ubuntu 3.16.0-49.65~14.04.1-generic 3.16.7-ckt15 Uname: Linux 3.16.0-49-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.13 Architecture: amd64 CurrentDesktop: Unity Date: Thu Sep 17 08:28:42 2015 InstallationDate: Installed on 2015-08-27 (20 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) SourcePackage: linux-lts-utopic UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: linux-lts-utopic (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1496697 Title: HDMI output gone after completing ubuntu updates To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1496697/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
