kernel-packages team mailing list archive

[Andy Whitcroft <apw@xxxxxxxxxxxxx>]

I have built some test kernels with that patch applied, can you test
these kernels and confirm they resolve the issue.  Kernels are at the
URL below:

    http://people.canonical.com/~apw/lp1295032-trusty/

Please report any testing here.

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https://bugs.launchpad.net/bugs/1295032

Title:
  3840x2160 fails with 30Hz with HDMI

Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  The radeon graphics card driver assumes any pixel clock speed over
  165000 should be using Dual-Link DVI, although the speeds are possible
  over HDMI as of HDMI 1.3.

  The fix, as well as a link to a more detailed bug report, can be found here:
  https://github.com/torvalds/linux/commit/d03874c881a049a50e12f285077ab1f9fc2686e1

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