Enable -proposed on WAG16-PV-SKU2-1P_202302-311246, and install 6.1.0-1016-oem, follow the steps in description. The eDP and external monitor work with no obvious blank space.
** Tags removed: verification-needed-jammy ** Tags added: verification-done-jammy -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-6.1 in Ubuntu. https://bugs.launchpad.net/bugs/2024273 Title: Fix eDP only displays 3/4 area after switching to mirror mode with external HDMI 4K monitor Status in HWE Next: New Status in linux package in Ubuntu: Incomplete Status in linux-oem-6.1 package in Ubuntu: Invalid Status in linux source package in Jammy: Incomplete Status in linux-oem-6.1 source package in Jammy: Fix Committed Bug description: [Impact] Panel on laptops connect to some 4K monitors via HDMI only display 3/4 area on eDP after switching to mirror mode. [Fix] Backport a fix from Intel on https://cgit.freedesktop.org/drm-tip/commit/?id=a2da67028cd05516343533c1609fcaf037237fed. [Test] 1. Power on the laptop 2. Connect a 4K monitor (4k Benq EL2870U, 4k HP z27Kg3, 2k ASUS PA27AC) to the laptop with HDMI cable. 3. Switch to mirror mode from default Joint Mode 4. Verify there's no obvious blank space on the leftmost/rightmost side of the laptop's panel. [Where problems could occur] Only observed after connecting with some particular 4K monitors. It's a generic fix to accept arbitrary refresh rate for more advanced panels. Should be low risk to old machines. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/2024273/+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
