And I completely misstated myself. :( What I think I want is: 237ed86c with the current patch for this bug applied.
Here is what I'm seeing, and trying to isolate it to these two patches, or if it's something yet newer that we'll need to bisect all over again: With current xenial (4.4.0-13 and -14), but not with the trunk prior to 237ed86c, when the OS stops sending video to the displays (in my case after screen locks and there is still no keyboard/mouse activity), then the windows get jumbled around in a manner that is consistent with X deciding that it's single-headed again, and then back to double headed. The kernel in #40 does not exhibit this behavior. It would be interesting to see if 237ed86c with the xenial fix does or does not. If it does, then this remains an open bug. If it does not, then we have a new bug, and a need to bisect again, with 4.4.0-13 (from the archive) being the initial bad, and 237ed86c+fix as the first good. Sadly, every single kernel in that bisect will need to have the fix applied post- bisect, so lets hope it's still this bug. As of right now, initial good is 237ed86c~1(with current fix -- I don't think I tested for this when we were doing the initial bisect.) Thanks -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1543683 Title: Fails to detect (second) display Status in linux package in Ubuntu: Fix Released Status in linux source package in Xenial: Fix Released Bug description: With the upgrade to 4.4.0-2, only one of the two displays in the machine is detected. With 4.3.0-7 (and earlier) both are detected. In this case, both display connectors are on the MB. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-extra-4.4.0-2-generic 4.4.0-2.16 ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0 Uname: Linux 4.4.0-2-generic x86_64 ApportVersion: 2.19.4-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: lamont 3923 F.... pulseaudio CurrentDesktop: Unity Date: Tue Feb 9 10:22:38 2016 HibernationDevice: RESUME=UUID=5d145c55-633f-4197-a4c9-0b165b6dbeb3 InstallationDate: Installed on 2014-09-22 (505 days ago) InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2) MachineType: Shuttle Inc SG41 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-2-generic root=UUID=ba0ea95b-cde0-42ba-b06e-9fd6ca006881 ro nomdmonddf nomdmonisw RelatedPackageVersions: linux-restricted-modules-4.4.0-2-generic N/A linux-backports-modules-4.4.0-2-generic N/A linux-firmware 1.155 RfKill: 0: hci0: Bluetooth Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2014-11-14 (452 days ago) dmi.bios.date: 02/10/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 080015 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: FG41 dmi.board.vendor: Shuttle Inc dmi.board.version: V20 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Shuttle Inc dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080015:bd02/10/2011:svnShuttleInc:pnSG41:pvrV20:rvnShuttleInc:rnFG41:rvrV20:cvnShuttleInc:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: SG41 dmi.product.version: V20 dmi.sys.vendor: Shuttle Inc To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1543683/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
