[Bug 52373] New: KMS makes screen black on ARUBA--TURKS hybrid device

[Bug 52373] New: KMS makes screen black on ARUBA--TURKS hybrid device

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=52373

             Bug #: 52373
           Summary: KMS makes screen black on ARUBA--TURKS hybrid device
    Classification: Unclassified
           Product: DRI
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: reinkarn@gmail.com


Created attachment 64509
  --> https://bugs.freedesktop.org/attachment.cgi?id=64509
lspci

Just bought new Acer V3 notebook with hybrid AMD graphics, installed gentoo
without even Xs.
When booting with radeon.modeset=1, after loading radeon module screen goes
black (backlight is on, but nothing on the screen) (notebook works howewer, can
ssh into it), and dmesg shows two bad lines:

[drm:radeon_dp_link_train_ce] *ERROR* channel eq failed: 5 tries
[drm:radeon_dp_link_train_ce] *ERROR* channel eq failed

These lines repeat when hitting a key after backlight goes off for powersaving

When booting with no modesetting parameter, everything works fine.

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[Bug 52373] KMS makes screen black on ARUBA--TURKS hybrid device

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=52373

--- Comment #1 from Daniel <reinkarn@gmail.com> 2012-07-22 22:03:49 PDT ---
Created attachment 64510
  --> https://bugs.freedesktop.org/attachment.cgi?id=64510
dmesg output. Last four lines are when i hit any key to turn backlight back on

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[Bug 52373] KMS makes screen black on ARUBA--TURKS hybrid device

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=52373

--- Comment #2 from Daniel <reinkarn@gmail.com> 2012-07-22 22:05:13 PDT ---
Created attachment 64511
  --> https://bugs.freedesktop.org/attachment.cgi?id=64511
grub.cfg if needed

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[Bug 52373] KMS makes screen black on ARUBA--TURKS hybrid device

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=52373

--- Comment #3 from Daniel <reinkarn@gmail.com> 2012-07-22 22:09:35 PDT ---
Created attachment 64514
  --> https://bugs.freedesktop.org/attachment.cgi?id=64514
kernel 3.5.0 config, 3.4.3 is similar

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[Bug 52373] KMS makes screen black on ARUBA--TURKS hybrid device

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=52373

Daniel <reinkarn@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|medium                      |high

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[Bug 52373] KMS makes screen black on ARUBA--TURKS hybrid device

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=52373

Daniel <reinkarn@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|high                        |medium

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[Bug 52373] KMS makes screen black on ARUBA--TURKS hybrid device

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=52373

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE

--- Comment #5 from Alex Deucher <agd5f@yahoo.com> 2012-07-23 14:58:48 UTC ---


*** This bug has been marked as a duplicate of bug 52256 ***

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[Bug 52373] KMS makes screen black on ARUBA--TURKS hybrid device

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=52373

--- Comment #4 from Daniel <reinkarn@gmail.com> 2012-07-23 11:52:42 PDT ---
X is not starting as well showing:

(II) [KMS] Kernel modesetting enabled.
radeon: Invalid PCI ID.

Tried with latest stable and latest git libdrm and xf86-video-ati

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