[Bug 97558] [Broadwell] VGA projection system not detected as of Linux 4.7 (but fine before then)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97558

--- Comment #15 from Gwendal <c86rc9-9snbcbobzdzipkvbcg_freedesktop at bousse.fr> ---
Hello,

I have the same problem (I think): beamers were working perfectly fine until a
system update weeks ago.

My configuration:
- Fedora 25 beta (but the problem was there with F24 as well)
- 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated
Graphics Controller (rev 0b)
- linux 4.8.4-301.fc25.x86_64

Regular Iijama monitors work fine in VGA (both the one I have at home and the
one from my office, which is a Prolite XB2485WSU).

However beamers (rather old, which is typical in universities) do not work in
VGA: nothing detected with xrandr or anything else. I have this situation with
two different beamers.

If I can provide more information, please do not hesitate to ask!

Thanks! Regards

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