Previous one: *-1023 I'm sure of that because I use HDMI every day, at work or at home. And I checked my apt/Synaptic's history. Nothing else was updated this day apart kernels. I updated GS and Mutter to 3.36.9 *way after* having experienced the issue for the first time.
And kernel 5.8 hwe is working nicely with HDMI... Please note that I did have some partially similar issues with 5.10 oem with my Dell WD15 dock (2 displays) at work: after unplugging the usb-c, I have to force the shutdown and sleep is broken. I absolutely don't know if this is related to this bug here. -- 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/1924238 Title: Fix no picture from HDMI when it's plugged after boot Status in HWE Next: New Status in linux package in Ubuntu: Fix Committed Status in linux-oem-5.10 package in Ubuntu: Invalid Status in linux source package in Focal: Won't Fix Status in linux-oem-5.10 source package in Focal: Fix Committed Status in linux source package in Hirsute: Confirmed Status in linux-oem-5.10 source package in Hirsute: Invalid Bug description: [Impact] On Intel CML desktop, there's no HDMI output when the cable is not connected pre-boot. [Fix] Properly handle lane polarity so the driver can write different values to the register to enable the port. [Test] 1. Boot with DP display. 2. Connect HDMI under GNOME desktop. 3. No picture on HDMI monitor. With the fix applied, the issue is resolved. [Where problems could occur] If the BIOS VBT table is not correct, which did happen in the pase, this fix may break those ports. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1924238/+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
