search

pop-os / pop

A project for managing all Pop!_OS sources
https://system76.com/pop
2.48k stars 87 forks source link

Dual monitor visual glitch when both in landscape orientation #3407

Open daishishi opened 1 week ago

daishishi commented 1 week ago

Distribution (run cat /etc/os-release):

NAME="Pop!_OS" VERSION="22.04 LTS" ID=pop ID_LIKE="ubuntu debian" PRETTY_NAME="Pop!_OS 22.04 LTS" VERSION_ID="22.04" 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=jammy UBUNTU_CODENAME=jammy LOGO=distributor-logo-pop-os

Issue/Bug Description: When one monitor is set to portrait mode (inverted or not), and the other is in landscape mode. If you set the monitor from portrait to landscape, one of the monitor (always the same one) starts glitching. The issue presents itself as green/noise bar across the screen.

First my physical setup, it may help: one monitor is a LG 23EA53 connect via HDMI, the other is an ASUS VG32VQ1B connected via Display Port. Running a Ryzen 5 2400G and a Radeon RX 6600, the latter connected to the monitors. Changing resolutions on either monitor didn't solve the issue, neither change the monitor Refresh Rate.

The weird parts:

  1. Initially it doesn't matter which monitor is on portrait mode, and which is in landscape. The moment the portrait monitor goes to landscape the issue appears.
  2. It always the ASUS monitor, connected via Display port, that presents the flickering.
  3. No issues in any other change of monitor orientation. Including from portrait to landscape (inverted).
  4. There is a workaround: If you set the portrait monitor to landscape (inverted) at any point, then to landscape (normal) afterwards, the flickering goes always.

Steps to reproduce (if you know): Using two monitor, possibly one connect via HDMI and the other via Display Port. Set one monitor to portrait mode, leave the other one in landscape. Set the portrait monitor to landscape (normal). The Display Port monitor should stars flickering, presenting green 'glitch' bands.

Expected behavior: Changing monitor orientation shouldn't introduce any visual artifacts.

Other Notes: Video of the issue: