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pop-os / pop

A project for managing all Pop!_OS sources
https://system76.com/pop
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External display not working anymore via USB-c dock after updating to kernel 5.11 #1641

Open systemverwalter opened 3 years ago

systemverwalter commented 3 years ago

Distribution (run cat /etc/os-release): NAME="Pop!_OS" VERSION="20.10" ID=pop ID_LIKE="ubuntu debian" PRETTY_NAME="Pop!_OS 20.10" VERSION_ID="20.10" HOME_URL="https://pop.system76.com" SUPPORT_URL="https://support.system76.com" BUG_REPORT_URL="https://github.com/pop-os/pop/issues" PRIVACY_POLICY_URL="https://system76.com/privacy" VERSION_CODENAME=groovy UBUNTU_CODENAME=groovy LOGO=distributor-logo-pop-os

Related Application and/or Package Version (run apt policy $PACKAGE NAME):

Issue/Bug Description: I usually connect a USB-c dock to my laptop. An external monitor is connected to the USB-c dock by DP. It used to work fine with kernel 5.8 and DKMS evdi driver 1.7.0 (displaylink-driver-5.3.1.34 installed). With the update to kernel 5.11, the evdi driver 1.7.0 won't install anymore. After some fiddling, the installation of the 1.9.1 version went OK (displaylink-driver-5.4.0-55.153). The monitor is now recognized in the display settings but it won't show any content. The screen stays black.

Steps to reproduce (if you know): Update to kernel 5.11 and install displaylink-driver-5.4.0-55.153 (https://www.synaptics.com/products/displaylink-graphics/downloads/ubuntu) Try to get a DisplayPort connected screen working.

Expected behavior: External display should work out of the box as with kernel 5.8.

Other Notes:

chrros95 commented 3 years ago

With latest Displaylink-Driver (v5.4.0 - Apr 6, 2021) the issues should be resolved - it works on my system.

BTW. The root cause was evdi in my case.

PaulVanSchayck commented 3 years ago

This also happens to me. But also on non-displaylink USB-c video. I've uninstalled the displaylink drivers to be sure those are not the cause.

ksmithut commented 3 years ago

I mentioned this on another issue, but I'm also having issues connecting to my external monitor, but rather than just not working, it locks up my entire system (System76 oryp5). I've tried updating the latest Displaylink-Driver but it doesn't resolve it.

abrassel commented 3 months ago

I am also having this issue. USB-C hub doesn't work