[Bug 88331] New: [Intel H61 Express] [Graphics/HDMI] PCH HDMI (0x000e1160) enabled on transcoder A, should be disabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88331

            Bug ID: 88331
           Summary: [Intel H61 Express] [Graphics/HDMI] PCH HDMI
                    (0x000e1160) enabled on transcoder A, should be
                    disabled
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: lacyc3 at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 112122
  --> https://bugs.freedesktop.org/attachment.cgi?id=112122&action=edit
dmesg - Ubuntu 14.10 with kernel 3.16.0-29-generic

If I connect display with HDMI connector, display shuts down. Dmesg shows the
following message:

[    1.413309] WARNING: CPU: 0 PID: 118 at
/build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_display.c:1426
assert_pch_hdmi_disabled+0xad/0xf0 [i915]()
[    1.413310] PCH HDMI (0x000e1160) enabled on transcoder A, should be
disabled
[    1.413311] Modules linked in: i915(+) psmouse i2c_algo_bit ahci
drm_kms_helper r8169 libahci drm mii video
[    1.413318] CPU: 0 PID: 118 Comm: systemd-udevd Not tainted
3.16.0-29-generic #39-Ubuntu
[    1.413318] Hardware name: Dell Inc. OptiPlex 3010/042P49, BIOS A08
12/07/2012

System environment:
--
Machine: Dell Optiplex 3010
Chipset: H61 Express
--
Distribution: Ubuntu 14.10
System architecture: x86_64
Kernel: 3.16.0-29-generic
Display connector: HDMI
--
Xserver-xorg-video-intel: 2:2.99.914-1~exp1ubuntu4.1
Xserver: 1:7.7+7ubuntu2
Mesa: 10.3.2
Libdrm2: 2.4.56-1
Libdrm-intel1: 2.4.56-1

Reproduce:
1. Connect display with HDMI and start Linux.

Additional info:
- Xorg.conf is auto generated by X, nothing modified.

I thought that it is an regression and/or an Ubuntu related problem, so I run
some tests. The result is, that Debian 7.7 with kernel 3.2.0-4 is not affected.

Unaffected systems:
- Debian 7.7 with kernel 3.2.0-4 (amd64)

Affected systems:
- Ubuntu 15.04 with kernel 3.18.0-generic (amd64)
- Ubuntu 14.10 with kernel 3.16.0-29-generic (amd64)
- Ubuntu 14.04 with kernel 3.13.0-32-generic (amd64)
- Ubuntu 13.04 with kernel 3.8.0-19-generic (amd64)
- Fedora 21 with kernel 3.17.4-301.fc21.x86_64 (amd64)
- Centos 7 with kernel 3.10-123.el7.x64_64 (amd64)

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