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I recently switched from LM Cinnamon build to LM MATE build. Everything went fine at first, but now I experience issues where my screen goes black showing only the underscore flashing. Results: ubuntu-bug linux results: *** Collecting problem information The collected information can be sent to the developers to improve the application. This might take a few minutes. ................... *** Problem in linux-image-5.4.0-94-generic The problem cannot be reported: This is not an official Linux package. Please remove any third party package and try again. cat /proc/version_signature > version.log results: Ubuntu 5.4.0-94.106-generic 5.4.157 sudo lspci -vnvn > lspci-vnvn.log results: pcilib: sysfs_read_vpd: read failed: Input/output error pcilib: sysfs_read_vpd: read failed: Input/output error lsb_release -rd results: Description: Linux Mint 20.2 Release: 20.2 While browsing through 'System Log Viewer' tool on the system, I noticed a few lines saying things like 'kernel bug' or 'firmware bug'. After no luck on the forums, I was told that I should put this up here. Inxi -Fzn result: https://pastebin.com/raw/W3DUxUzu Xorg log (from System Log Viewer): https://pastebin.com/raw/ePCk2DaL kern.log (from System Log Viewer): https://pastebin.com/raw/ju233mxe syslog from System Log Viewer tool will be attached. I hope that any of this will be enough to identify the issue. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: bot-comment -- Acer laptop screen goes black after a few hours of work https://bugs.launchpad.net/bugs/1958089 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- 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