Summary: | EDID confusion with LG 4K TV as monitor running X rather than wayland | ||
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Product: | xorg | Reporter: | Tom Horsley <horsley1953> |
Component: | Driver/nouveau | Assignee: | Nouveau Project <nouveau> |
Status: | RESOLVED MOVED | QA Contact: | Xorg Project Team <xorg-team> |
Severity: | normal | ||
Priority: | medium | ||
Version: | unspecified | ||
Hardware: | Other | ||
OS: | All | ||
Whiteboard: | |||
i915 platform: | i915 features: |
Description
Tom Horsley
2019-05-07 00:16:01 UTC
FWIW I have a LG C7P which I tested with a GM206 and GP107. Slightly different than your setup, but comparable. I used this setup for bringup of HDMI 2.0 support, available in kernel 4.20. HDMI 2.0 is required for 4k@60 over HDMI. Looking at those logs, you appear to be using modeset instead of xf86-video-nouveau (note how it says "modeset" instead of "NOUVEAU"). The logs make it look like modeset is trying to use a 3840x2160 594MHz mode. This requires HDMI 2.0 to work (and should have been filtered out, but nonetheless is the modeline presented). I'd recommend (a) using xf86-video-nouveau [RH has made local changes to this driver to not load, but I believe this to be a very bad idea, you can override with an xorg.conf iirc], and (b) updating to a 4.20+ kernel so that you get HDMI 2.0 to work to get access to the higher refresh rates. -- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity. You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/484. |
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