Public bug reported:

On Ubuntu 20.04 on a DELL XPS13 (with i915 Chip): after the update of
mesa-vulkan-drivers from 21.0.3 to 21.2.6 (incl. libgl*, libdrm* etc.),
external displays (here connected via DELL USB Dock) are not detected
anymore. I had to restore the old version with Timeshift.

** Affects: mesa (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

- Same here with Ubuntu 20.04 on a DELL XPS 13 (with i915 Chip): after the
- update of mesa-vulkan-drivers from 21.0.3 to 21.2.6 (incl. libgl,
- libglapi, libdrm etc.), external monitors (here connected via DELL USB
- Dock) are not detected anymore. I had to restore the old version with
- Timeshift.
+ On Ubuntu 20.04 on a DELL XPS 13 (with i915 Chip): after the update of
+ mesa-vulkan-drivers from 21.0.3 to 21.2.6 (incl. libgl, libglapi, libdrm
+ etc.), external monitors (here connected via DELL USB Dock) are not
+ detected anymore. I had to restore the old version with Timeshift.

** Description changed:

- On Ubuntu 20.04 on a DELL XPS 13 (with i915 Chip): after the update of
+ On Ubuntu 20.04 on a DELL XPS13 (with i915 Chip): after the update of
  mesa-vulkan-drivers from 21.0.3 to 21.2.6 (incl. libgl, libglapi, libdrm
  etc.), external monitors (here connected via DELL USB Dock) are not
  detected anymore. I had to restore the old version with Timeshift.

** Description changed:

  On Ubuntu 20.04 on a DELL XPS13 (with i915 Chip): after the update of
- mesa-vulkan-drivers from 21.0.3 to 21.2.6 (incl. libgl, libglapi, libdrm
- etc.), external monitors (here connected via DELL USB Dock) are not
- detected anymore. I had to restore the old version with Timeshift.
+ mesa-vulkan-drivers from 21.0.3 to 21.2.6 (incl. libgl*, libdrm* etc.),
+ external monitors (here connected via DELL USB Dock) are not detected
+ anymore. I had to restore the old version with Timeshift.

** Description changed:

  On Ubuntu 20.04 on a DELL XPS13 (with i915 Chip): after the update of
  mesa-vulkan-drivers from 21.0.3 to 21.2.6 (incl. libgl*, libdrm* etc.),
- external monitors (here connected via DELL USB Dock) are not detected
+ external displays (here connected via DELL USB Dock) are not detected
  anymore. I had to restore the old version with Timeshift.

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https://bugs.launchpad.net/bugs/1960544

Title:
  External Monitors Not Detected Anymore

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