GXL/S905X HDMI: 1440x900 DMT mode fails to display despite clean modeset (meson_drm)

[Christian Hewitt]

> On 7 Aug 2026, at 9:43 pm, Steve_vr <sstevevr at gmail.com> wrote:
> 
> Hi all,

[snip]

> Happy to test patches or provide more dmesg/edid-decode output if
> useful. Full technical writeup (mode strings tried, dmesg excerpts,
> PHY register values) available on request.

First thing to do is prove the issue exists on a current mainline
kernel and not the downstream patchiest you are using. There are
changes in recent (newer) kernels that may resolve the issue.

CH.