[Bug 87172] UHD 4K (DisplayPort 1.2) monitor autodetects at 60Hz on Radeon 5870, which fails as this card doesn't support DP1.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=87172

Alex Deucher  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |INVALID

--- Comment #4 from Alex Deucher  ---
Closing due to no feedback.

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[Bug 87172] UHD 4K (DisplayPort 1.2) monitor autodetects at 60Hz on Radeon 5870, which fails as this card doesn't support DP1.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=87172

--- Comment #3 from Alex Deucher  ---
(In reply to Paolo Devoti from comment #2)
> Same issue on Ubuntu 17.10 AMD RX480 and an UHD tv
> see also 
> https://bugs.launchpad.net/ubuntu/+bug/1725395

Your chip is supported by a different driver (radeon vs amdgpu) please open
your own bug.

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[Bug 87172] UHD 4K (DisplayPort 1.2) monitor autodetects at 60Hz on Radeon 5870, which fails as this card doesn't support DP1.2

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=87172

--- Comment #2 from Paolo Devoti  ---
Same issue on Ubuntu 17.10 AMD RX480 and an UHD tv
see also 
https://bugs.launchpad.net/ubuntu/+bug/1725395

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[Bug 87172] UHD 4K (DisplayPort 1.2) monitor autodetects at 60Hz on Radeon 5870, which fails as this card doesn't support DP1.2

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87172

--- Comment #1 from Alex Deucher  ---
Created attachment 110680
  --> https://bugs.freedesktop.org/attachment.cgi?id=110680=edit
possible fix

This patch should fix it.

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[Bug 87172] UHD 4K (DisplayPort 1.2) monitor autodetects at 60Hz on Radeon 5870, which fails as this card doesn't support DP1.2

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87172

Michel Dänzer  changed:

   What|Removed |Added

  Component|Driver/Radeon   |DRM/Radeon
   Assignee|xorg-driver-ati at lists.x.org |dri-devel at 
lists.freedesktop
   ||.org
Product|xorg|DRI
 QA Contact|xorg-team at lists.x.org   |

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