[Bug 59614] New: [bisected] Black screen on boot with Radeon HD 6670

* [Bug 59614] New: [bisected] Black screen on boot with Radeon HD 6670
@ 2013-01-20  9:14 bugzilla-daemon
  2013-01-20 14:57 ` [Bug 59614] " bugzilla-daemon
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: bugzilla-daemon @ 2013-01-20  9:14 UTC (permalink / raw)
  To: dri-devel

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https://bugs.freedesktop.org/show_bug.cgi?id=59614

          Priority: medium
            Bug ID: 59614
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [bisected] Black screen on boot with Radeon HD 6670
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: markus.ka.rinne@gmail.com
          Hardware: x86 (IA32)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

At boot, the screen goes blank.  This happens at the moment when the screen
would normally change from VGA text console to framebuffer text console.  I
can't make an ssh connection to the box after screen goes blank.

Motherboard: MSI K9AGM3
Video card: Radeon HD 6670

lspci -vvv gives: 

01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Turks
[Radeon HD 6670] (prog-if 00 [VGA controller])
        Subsystem: ASUSTeK Computer Inc. Device 03e0
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 43
        Region 0: Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Region 2: Memory at fe9e0000 (64-bit, non-prefetchable) [size=128K]
        Region 4: I/O ports at c000 [size=256]
        Expansion ROM at fe9c0000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: radeon

I bisected this.  The first bad commit is:
0ecebb9e0d14e9948e0b1529883a776758117d6f drm/radeon: switch to a finer grained
reset for evergreen

Reverting this commit on top of v3.8-rc4 results in a working system.

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