From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 98333] 4K @ 60Hz over HDMI 2.0 not working with AMDGPU-DAL
Date: Thu, 05 Jan 2017 01:34:14 +0000 [thread overview]
Message-ID: <bug-98333-502-VGJWJip5Al@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-98333-502@http.bugs.freedesktop.org/>
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https://bugs.freedesktop.org/show_bug.cgi?id=98333
--- Comment #15 from smoki <smoki00790@gmail.com> ---
(In reply to wiak from comment #9)
> Hey i got the exact same issue with a Samsung HU7505 4k60 television using
> amdgpu on xubuntu 16.04.1/16.10, amdgpu-pro-16.50-362463 drivers work in
> 4k60 until the display is turned off and then it gives "mode not supported"
>
On pro it might be just DPMS on/off issue or some monitors (this is actually
TV where DPMS is usually off by default) or specific issues/customizations
like:
"Samsung offers a new user-accessible control called [HDMI UHD Color] on its
2014 range of UHDTVs. Instead of expanding the TV’s gamut to fulfil Rec.2020
colour space (we wished), it serves to provide support for up to 4:4:4 chroma
resolution with 4K@60p/50p sources, indicating that the 55HU7500′s onboard HDMI
2.0 chip is a full-bandwidth, Level A version. [HDMI UHD Color] has to be
enabled manually for each HDMI port where 4K res with 4:2:2 or 4:4:4
reproduction is required, because the chroma information is not auto-detected
by the chip Samsung is using."
http://www.hdtvtest.co.uk/news/ue55hu7500-201405083761.htm
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next prev parent reply other threads:[~2017-01-05 1:34 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-19 21:04 [Bug 98333] 4K @ 60Hz over HDMI 2.0 not working with AMDGPU-DAL bugzilla-daemon
2016-10-20 3:44 ` bugzilla-daemon
2016-10-26 15:45 ` bugzilla-daemon
2016-11-03 2:54 ` bugzilla-daemon
2016-11-03 2:59 ` bugzilla-daemon
2016-11-03 4:46 ` bugzilla-daemon
2016-12-02 21:59 ` bugzilla-daemon
2016-12-02 22:02 ` bugzilla-daemon
2017-01-04 11:27 ` bugzilla-daemon
2017-01-04 11:30 ` bugzilla-daemon
2017-01-04 11:31 ` bugzilla-daemon
2017-01-04 11:32 ` bugzilla-daemon
2017-01-04 11:48 ` bugzilla-daemon
2017-01-04 11:49 ` bugzilla-daemon
2017-01-04 11:49 ` bugzilla-daemon
2017-01-05 1:34 ` bugzilla-daemon [this message]
2017-02-23 3:10 ` bugzilla-daemon
2017-02-23 3:11 ` bugzilla-daemon
2017-02-23 3:22 ` bugzilla-daemon
2019-11-19 8:11 ` bugzilla-daemon
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