[Bug 1949677] Re: Vendor logo does not display in correct ratio on external monitor as it have different ratio than internal on

[Daniel van Vugt]

Thanks. Those logs say the preferred mode is 1920x1080 so indeed you
will see some aspect distortion if that's referring to a 1920x1200
monitor...

Next we need to find out if either:

(a) the incorrect preferred mode is coming from the kernel; or

(b) plymouth is applying the preferred mode of the laptop panel to the
external monitor.

Please run 'drm_info' while only the external monitor is connected and
the laptop lid is still closed, and attach the output here. drm_info is
not in the archive until hirsute but it's a very simple program you
should be able to get running: https://launchpad.net/ubuntu/+source/drm-
info

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https://bugs.launchpad.net/bugs/1949677

Title:
  Vendor logo does not display in correct ratio on external monitor as
  it have different ratio than internal on

Status in OEM Priority Project:
  Confirmed
Status in plymouth package in Ubuntu:
  Incomplete

Bug description:
  As Ubuntu boots up, the vendor logo will be retrieved and displayed on
  the monitor.

  Per test, as internal and external monitors have different Wide/Hight
  ratios, Plymouth will use the monitor ratio of the internal monitor,
  and the vendor logo will be displayed on both monitors.

  Some laptops can boot up even as it's the lid is close, and use the
  external monitor, keyboard, and mouse only.

  For that case:

  - internal monitor: off
  - external monitor: display the vendor still in the internal monitor ratio.

  Which is ok but not perfect.

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