Bug#908704: linux-image-4.18.0-1-amd64: Fix downgraded resolutions for Display Port
Control: tags -1 + wontfix
Hi Ricardo,
On Wed, Sep 12, 2018 at 10:32:45PM +0200, Ricardo Ribalda Delgado wrote:
> Package: src:linux
> Version: 4.18.6-1
> Severity: normal
>
> Dear Maintainer,
>
> Some High Resolution Screens are downgraded to full HD due to DP link
> training failures.This problem can be easily solved by allowing retries
> during DP link training.
>
> If the hardware is capable of running at high resolution the
> link will be properly calibrated after 2 o 3 attempts. If the hardware
> cannot run at that resolution the link will be downgraded in less than a
> second.
>
> The proposed patch is self contained and has been tested successfuly on
> 4 different kernels (4.15 - 4.18).
>
> This bug has been replicated on multiple devices and screens and
> notified to upstream: https://bugs.freedesktop.org/show_bug.cgi?id=106223
>
> Unfortunately it is considered low-priority for Intel (but high-annoying
> by the users).
>
> Hopefully this patch will allow users to make full use of their screens
> and I will spend less time rebuilding my kernel.
Assuming the problem is still present (at least following the last
replies from the upstream report): We will not apply a patch which is
not going to be merged upstream (unless in very rate situations).
So the only way here is to try to move upstream.
Regards,
Salvatore
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