** Description changed: - System can show image in HDMI output during bootup. I don't know which - mode it is using during bootup. Anyway it can not show image in - 1920x1080 mode when using the GUI. I am using Xubuntu 20.04. In my - system HDMI is just a Displayport connector with an adapter. xrandr - lists the video modes of the connected HDMI monitor, and it does not - show any error message or non-zero exit status when I enable 1920x1080 - mode in the HDMI output; thereafter xrandr shows the mode is currently - used in the HDMI output, but my monitor/TV does not show such a video - mode. It can still work in 1920x1080i and lower resolution modes. VGA - output works fine. + My computer can not show in 1920x1080 mode with 50Hz or 60Hz refresh + rate. I am using Xubuntu 20.04. In my system HDMI is just a Displayport + connector with an adapter. xrandr lists the video modes of the connected + HDMI monitor, and it does not show any error message or non-zero exit + status when I enable 1920x1080 mode in the HDMI output; thereafter + xrandr shows the mode is currently used in the HDMI output, but my + monitor/TV does not show such a video mode. It can still work in + 1920x1080i and lower resolution modes, or even in 1920x1080 mode with + 30Hz refresh rate. VGA output works without issues. The bug occurs with linux-image-5.15.0-67-generic but not with linux- image-5.15.0-60-generic. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.15.0-67-generic 5.15.0-67.74~20.04.1 ProcVersionSignature: Ubuntu 5.15.0-67.74~20.04.1-generic 5.15.85 Uname: Linux 5.15.0-67-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.25 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: XFCE Date: Wed Mar 8 07:51:31 2023 InstallationDate: Installed on 2019-12-05 (1188 days ago) InstallationMedia: Xubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) SourcePackage: linux-signed-hwe-5.15 UpgradeStatus: Upgraded to focal on 2020-07-10 (970 days ago)
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-hwe-5.15 in Ubuntu. https://bugs.launchpad.net/bugs/2009672 Title: Regression: Unable to show the native 1920x1080 mode in HDMI/DisplayPort output with best refresh rates Status in linux-signed-hwe-5.15 package in Ubuntu: New Bug description: My computer can not show in 1920x1080 mode with 50Hz or 60Hz refresh rate. I am using Xubuntu 20.04. In my system HDMI is just a Displayport connector with an adapter. xrandr lists the video modes of the connected HDMI monitor, and it does not show any error message or non-zero exit status when I enable 1920x1080 mode in the HDMI output; thereafter xrandr shows the mode is currently used in the HDMI output, but my monitor/TV does not show such a video mode. It can still work in 1920x1080i and lower resolution modes, or even in 1920x1080 mode with 30Hz refresh rate. VGA output works without issues. The bug occurs with linux-image-5.15.0-67-generic but not with linux- image-5.15.0-60-generic. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.15.0-67-generic 5.15.0-67.74~20.04.1 ProcVersionSignature: Ubuntu 5.15.0-67.74~20.04.1-generic 5.15.85 Uname: Linux 5.15.0-67-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.25 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: XFCE Date: Wed Mar 8 07:51:31 2023 InstallationDate: Installed on 2019-12-05 (1188 days ago) InstallationMedia: Xubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) SourcePackage: linux-signed-hwe-5.15 UpgradeStatus: Upgraded to focal on 2020-07-10 (970 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.15/+bug/2009672/+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
