[Bug 98491] [HSW] i915 only uses 165MHz for HDMI port

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Mar 29 13:49:49 UTC 2017


https://bugs.freedesktop.org/show_bug.cgi?id=98491

Karol Herbst <karolherbst at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |REOPENED

--- Comment #13 from Karol Herbst <karolherbst at gmail.com> ---
(In reply to Jari Tahvanainen from comment #12)
> Karol - is there still a problem? Based on your last comment I'm not sure :)
> If you got system working, please mark bug status=resolved. If not then
> change status=reopened with additional info like the output from xrandr
> --query.

there still is.

The isssue is, that the kernel module can't detect that the internal HDMI port
can do higher Modes above 165MHz

what works is:
1. If I connect the Display to my HDMI port and add modelines manually, which
are dropped by the kernel module in the boot process. Those need a clock above
165MHz, but below 540MHz. They also work without issues.

2. my active HDMI -> miniDP Adapter, which gets also Modelines above 540MHz,
which also work.

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