ACK: [SRU][M][PATCH 0/1] The display becomes frozen after some time when a HDMI device is connected

[Stefan Bader]

On 31.01.24 11:46, Roxana Nicolescu wrote:
> BugLink: https://bugs.launchpad.net/bugs/2049027
> 
> SRU Justification:
> 
> [Impact]
> 
> Multiple users have reported frozen displays when external HDMI device
> is connected on systems with intel graphics chipsets.
> 
> [Fix]
> 
> * backport 49e0a85ec344: "drm/i915/dmc: Don't enable any pipe DMC events"
> from 6.6.9
> 
> [Test Plan]
> 
> * Tested on Intel TigerLake with iris Xe Graphics and no issues so far.
> It seems it affects mostly Alder Lake though, but at least it does not
> cause any issues on other models.
> * It has also been tested upstream https://gitlab.freedesktop.org/drm/intel/-/issues/8685
> 
> [Where problems could occur]
> * We could see issues on systems with Intel Graphics when HDMI devices
> are connected during power state changes.
> 
> Ville Syrjälä (1):
>    drm/i915/dmc: Don't enable any pipe DMC events
> 
>   drivers/gpu/drm/i915/display/intel_dmc.c | 43 ++++++++++++++++++++++--
>   1 file changed, 41 insertions(+), 2 deletions(-)
> 

Acked-by: Stefan Bader <stefan.bader at canonical.com>
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