[Bug 58024] New: [HD 3000] [Dual Monitor DVI+HDMI] [Asrock Z68 Extreme3 Gen3] Monitor connected to the DVI port randomly receives an incompatible monitor signal and is put to sleep.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58024

          Priority: medium
            Bug ID: 58024
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HD 3000] [Dual Monitor DVI+HDMI] [Asrock Z68 Extreme3
                    Gen3] Monitor connected to the DVI port randomly
                    receives an incompatible monitor signal and is put to
                    sleep.
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: fhaddad78 at cox.net
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 71207
  --> https://bugs.freedesktop.org/attachment.cgi?id=71207&action=edit
dmesg

Overview
----------------------
I switched to the Intel HD3000 GPU (Sandy Bridge) from a dedicated NVIDIA PCIx
GPU. Prior to the switch, the problem to be described never occured. I was
successfully able to use the NVIDIA propietary driver mixed with uvesafb, and
the nouveau driver (alone).

Hardware
----------------------
Motherboard:  Asrock Z68 Extreme3 Gen3 (latest firmware)
CPU:          Intel Core i5 2500k w/ HD Graphics 3000 (Sandy Bridge)
Overclocking: Stock
Monitor:      (2x) Dell Ultrasharp 2007FP (1600x1200 at 60Hz)
Connections:  Left monitor is connected via DVI
              Right monitor is connectd via HDMI

Occurs
----------------------
1) During the boot process of any Linux installation media that attempts to
load the Intel console frame buffer (Arch) or the Xorg driver (Ubuntu 12.04 and
12.10).

2) During the bootup of a minimum install of Linux (Gentoo, Arch) and during a
full desktop installation (Ubuntu).

Symptom
----------------------
During the bootup process, randomly, the left monitor, which is connected to
the DVI port on the motherboard, receives a bad signal. The result is either a
scrambled picture (think a tv receiving a bad signal via antenna) or the on
screen display reporting an incompatible signal and putting the monitor to
sleep.

Troubleshooting Steps
----------------------
1) Replaced the DVI cable
2) Moved the left monitor to the right side and connected it to the HDMI cable
and moved the right monitor to the left side and connected it to the DVI cable.
The problem followed the monitor which indicates the problem is somewhere
between the DVI port and the Intel driver.
3) Tried booting via UEFI and BIOS various distributions of Linux (Ubuntu
12.04, Ubuntu 12.10, and Arch) and displayed the same behavior.
4) Reverted to BIOS default values.
5) Reflashed the BIOS.
6) Tried various kernel versions 3.5.0, 3.5.9 EOL, 3.6.8, 3.6.9
*7) Disabled the Intel console frame buffer and switched to the uvesafb frame
buffer. However, I was unable to start the X server because I did not have the
appropriate drivers to use configured.

* After step 7, the problem has not occured.

Logs (Ubuntu 12.10)
----------------------

Linux fhaddad78-desktop 3.5.0-19-generic #30-Ubuntu SMP Tue Nov 13 17:48:01 UTC
2012 x86_64 x86_64 x86_64 GNU/Linux

I will attach the logs separately (exceeding the max characters for the bug
report).

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