I had several installations on the same computer now (for other reasons) and ALWAYS the correct resolution was found (without changing anything with the cables). To my view it cannot be the cable. Why is the resolution then never changed back to UHD even after restart/power on/off ?
Additional info: The TV is incorrectly identified as an Phillips 58" ... but is in fact only a 49" unit. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1650900 Title: UHD TV resolution changed unintendly to FHD Status in xorg package in Ubuntu: Incomplete Bug description: After "original Ubuntu 16.04 LTS" installation on my Intel® Pentium(R) CPU G4400 @ 3.30GHz × 2 Intel® HD Graphics 510 (Skylake GT1) System with UHD TV (3840x216@30Hz) Philips 49PUT4900 everything seemed fine. The resolution was totally ok with 3840x2160@30Hz. Without further installs (no known updates or so, beside the OpenSSH Server install) it falls back after a while to FHD (1920x1080) without option to switch back. It seems that the original installation recognizes all parameters as needed from the TV, but afterwards at some point it cannot. Several reboots of the system after the original installation it works still fine, but from one day to the other it is wrong. Additional information: 1.) I use an adapter cable converting from DP to HDMI (I have no DP monitor available). 2.) I already tried to start without a monitor connected and then connect 3.) I already tried to disconnect and then connect again (after 15sec.) 4.) Now I have upgraded everything with "apt-get upgrade" All without changing anything. Result from "lsb_release -rd" Description: Ubuntu 16.04.1 LTS Release: 16.04 apt-cache policy xorg xorg: Installed: 1:7.7+13ubuntu3 Candidate: 1:7.7+13ubuntu3 Version table: *** 1:7.7+13ubuntu3 500 500 http://de.archive.ubuntu.com/ubuntu xenial/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-53.74-generic 4.4.30 Uname: Linux 4.4.0-53-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.4 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Sun Dec 18 15:33:11 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Intel Corporation Device [8086:1902] (rev 06) (prog-if 00 [VGA controller]) Subsystem: Fujitsu Technology Solutions Device [1734:121c] InstallationDate: Installed on 2016-12-10 (7 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 046d:c05b Logitech, Inc. M-U0004 810-001317 [B110 Optical USB Mouse] Bus 001 Device 002: ID 046d:c31c Logitech, Inc. Keyboard K120 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: FUJITSU ESPRIMO P556/E85+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-53-generic root=UUID=1905211f-7356-4656-beaf-3804725467d1 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/09/2016 dmi.bios.vendor: FUJITSU // American Megatrends Inc. dmi.bios.version: V5.0.0.11 R1.14.0 for D3400-A1x dmi.board.name: D3400-A1 dmi.board.vendor: FUJITSU dmi.board.version: S26361-D3400-A1 dmi.chassis.type: 3 dmi.chassis.vendor: FUJITSU dmi.modalias: dmi:bvnFUJITSU//AmericanMegatrendsInc.:bvrV5.0.0.11R1.14.0forD3400-A1x:bd06/09/2016:svnFUJITSU:pnESPRIMOP556/E85+:pvr:rvnFUJITSU:rnD3400-A1:rvrS26361-D3400-A1:cvnFUJITSU:ct3:cvr: dmi.product.name: ESPRIMO P556/E85+ dmi.sys.vendor: FUJITSU version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Sun Dec 18 15:12:00 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.18.4-0ubuntu0.2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1650900/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
