[Bug 63135] New: [bisected] G69/nv50 DisplayPort dual-head fails to switch to KMS - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 63135] New: [bisected] G69/nv50 DisplayPort dual-head fails to switch to KMS
Date: Thu, 04 Apr 2013 21:17:19 +0000	[thread overview]
Message-ID: <bug-63135-8800@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=63135

          Priority: medium
            Bug ID: 63135
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
           Summary: [bisected] G69/nv50 DisplayPort dual-head fails to
                    switch to KMS
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: djpohly+freedesktop-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Driver/nouveau
           Product: xorg

Created attachment 77445
  --> https://bugs.freedesktop.org/attachment.cgi?id=77445&action=edit
systemd journal with kernel messages

Hardware: NVIDIA Corporation G96 [Quadro FX 580] (rev a1)
Distro: Arch Linux
Bisected commit:
http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=2c1a425e7d537ea655fa276f267c0b1cd100ff34

Steps to reproduce:
1. Boot system into text mode with normal kernel parameters.
2. Wait for module to load and attempt KMS.

Expected behavior:
3. KMS succeeds, login prompt appears.

Actual behavior:
3. System locks up and monitors go into power-saving mode.

More info:
* With nouveau.modeset=0, system boots normally.
* Was able to use SysRq to sync disks after hang but could not ssh, ping, or
reboot.
* Regression still present in current nvidia-git (db1b0f52) as well as
kernel.org git.
* nvidia module is not installed.

lspci.log and vbios.rom forthcoming.

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