Don’t worry: I stick with “real” DP. Is this still in scope? Anyway I am still able to connect via HDMI and check if the bug still exists.
Am 22. Februar 2021 06:57:38 MEZ schrieb Daniel van Vugt <1915...@bugs.launchpad.net>: >Please don't try "DP connected via usb" because that would introduce a >new set of potential bugs that would confuse the issue here. Or if you >do start using "DP connected via usb" then we should close this bug and >open new ones. > >-- >You received this bug notification because you are subscribed to the bug >report. >https://bugs.launchpad.net/bugs/1915382 > >Title: > external Monitor shows »No Signal« after dpms sleep > >Status in xorg-server package in Ubuntu: > New > >Bug description: > My external Monitor connected via HDMI is behaving strange and my > educated guess is it is related to dpms. > > Plugging in the monitor it will show »No Signal« although recognized > by `xrandr`. I would have to boot my machine with the monitor plugged > in to make it work. When going to standby (screen blanks after lock, > then screen goes to standby) the monitor is switched on (LED is going > white) and shortly after it will show the no-signal-message. `xrandr` > claims the monitor to be existent. Unplugging and replugging does not > help. Same happens when logging out to greeter. Strange in so far as > when booting up, the greeter is okay with the monitor. > > When issuing `xset -dpms` the behaviour changes and the monitor will > enter sleep and come back as expected when locking the session. > > Console (tty1-6) is available though at all times. > > (I generated the bug report with dpms set off accidentally) > > ProblemType: Bug > DistroRelease: Ubuntu 20.04 > Package: xorg 1:7.7+19ubuntu14 > ProcVersionSignature: Ubuntu 5.4.0-65.73-generic 5.4.78 > Uname: Linux 5.4.0-65-generic x86_64 > ApportVersion: 2.20.11-0ubuntu27.16 > Architecture: amd64 > BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' > CasperMD5CheckResult: skip > CompositorRunning: None > CurrentDesktop: Regolith:GNOME-Flashback:GNOME > Date: Thu Feb 11 09:51:33 2021 > DistUpgraded: Fresh install > DistroCodename: focal > DistroVariant: ubuntu > ExtraDebuggingInterest: Yes > GraphicsCard: > Intel Corporation UHD Graphics [8086:9bc4] (rev 05) (prog-if 00 [VGA > controller]) > Subsystem: Dell Device [1028:09c3] > InstallationDate: Installed on 2021-02-10 (0 days ago) > InstallationMedia: Regolith 20.04.0 1.4.1 LTS amd64 (20200511) > MachineType: Dell Inc. Precision 7550 > ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-65-generic > root=/dev/mapper/vgregolith-root ro quiet splash vt.handoff=7 > SourcePackage: xorg > UpgradeStatus: No upgrade log present (probably fresh install) > dmi.bios.date: 07/15/2020 > dmi.bios.vendor: Dell Inc. > dmi.bios.version: 1.3.2 > dmi.board.name: 090NVT > dmi.board.vendor: Dell Inc. > dmi.board.version: A01 > dmi.chassis.type: 10 > dmi.chassis.vendor: Dell Inc. > dmi.modalias: > dmi:bvnDellInc.:bvr1.3.2:bd07/15/2020:svnDellInc.:pnPrecision7550:pvr:rvnDellInc.:rn090NVT:rvrA01:cvnDellInc.:ct10:cvr: > dmi.product.family: Precision > dmi.product.name: Precision 7550 > dmi.product.sku: 09C3 > dmi.sys.vendor: Dell Inc. > version.compiz: compiz N/A > version.libdrm2: libdrm2 2.4.102-1ubuntu1~20.04.1 > version.libgl1-mesa-dri: libgl1-mesa-dri 20.2.6-0ubuntu0.20.04.1 > version.libgl1-mesa-glx: libgl1-mesa-glx N/A > version.xserver-xorg-core: xserver-xorg-core 2:1.20.9-2ubuntu1.2~20.04.1 > version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A > version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1 > version.xserver-xorg-video-intel: xserver-xorg-video-intel > 2:2.99.917+git20200226-1 > version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 > >To manage notifications about this bug go to: >https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1915382/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1915382 Title: external Monitor shows »No Signal« after dpms sleep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1915382/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs