** Description changed: [Impact] The 4k monitor on the dock is blank when connected to the device. [Fix] Intel provides a patch to fix this issue which disable PSR for the monitors on MST https://patchwork.freedesktop.org/patch/686338/ + c390bf07961b drm/i915/dp: Fix panel replay when DSC is enabled + 470b84af457e drm/i915/dp_mst: Recompute all MST link CRTCs if DSC gets enabled on the link + 7c027070e98d drm/i915/dp_mst: Track DSC enabled status on the MST link + b762ae48293e drm/i915/dp_mst: Reuse the DP-SST helper function to compute FEC config + cb6c8f1f6f46 drm/i915/dp: Export helper to determine if FEC on non-UHBR links is required + 69df31263bca drm/i915/dp: Ensure the FEC state stays disabled for UHBR links + c88e70dc8bfc drm/i915/dsc: Add helper to enable the DSC configuration for a CRTC + + [Test] 1. Boot to OS, connect dell dock 2. Connect 4k monitor to dock, it should always work. [Where problems could occur] It disables the PSR for the monitors connected on MST, it may consume more power.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2131066 Title: No output on external monitor when connecting to dell dock To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/2131066/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
