[Bug 74081] New: [GM965/GL960] [drm:intel_pipe_config_compare] *ERROR* mismatch in gmch_pfit.lvds_border_bits

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74081

          Priority: medium
            Bug ID: 74081
          Assignee: chris at chris-wilson.co.uk
           Summary: [GM965/GL960]  [drm:intel_pipe_config_compare] *ERROR*
                    mismatch in gmch_pfit.lvds_border_bits
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: manikulin at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

Created attachment 92811
  --> https://bugs.freedesktop.org/attachment.cgi?id=92811&action=edit
dmesg with drm.debug=0x0e

Latest kernels generates the following error to dmesg. The system and xorg are
able to start however.

[   25.896212] [drm:intel_connector_check_state], [CONNECTOR:5:LVDS-1]
[   25.896215] [drm:intel_connector_check_state], [CONNECTOR:11:VGA-1]
[   25.896219] [drm:check_encoder_state], [ENCODER:6:LVDS-6]
[   25.896222] [drm:check_encoder_state], [ENCODER:12:DAC-12]
[   25.896224] [drm:check_crtc_state], [CRTC:3]
[   25.896235] [drm:check_crtc_state], [CRTC:4]
[   25.896246] [drm:intel_pipe_config_compare] *ERROR* mismatch in
gmch_pfit.lvds_border_bits (expected 32768, found 0)
[   25.896246] ------------[ cut here ]------------
[   25.896294] WARNING: CPU: 1 PID: 392 at
/home/apw/COD/linux/drivers/gpu/drm/i915/intel_display.c:9558
check_crtc_state+0x275/0x330 [i915]()
[   25.896295] pipe state doesn't match!
[   25.896328] Modules linked in: ath9k(+) snd_hda_codec ath9k_common ath9k_hw
snd_hwdep snd_pcm snd_page_alloc snd_seq_midi i915(+) snd_seq_midi_event
microcode(+) snd_rawmidi snd_seq parport_pc ath ppdev mac80211 btusb
drm_kms_helper psmouse snd_seq_device drm bnep snd_timer rfcomm cfg80211 snd
bluetooth asus_laptop serio_raw soundcore sparse_keymap i2c_algo_bit lp
input_polldev lpc_ich video parport mac_hid hid_a4tech usbhid hid ahci libahci
r8169 mii
[   25.896332] CPU: 1 PID: 392 Comm: systemd-udevd Not tainted
3.13.0-994-generic #201401260429
[   25.896333] Hardware name: ASUSTeK Computer Inc.         F80L               
/F80L      , BIOS 206     08/06/2008
[   25.896337]  0000000000002556 ffff88007a2c1268 ffffffff81733672
0000000000000086
[   25.896340]  ffff88007a2c12b8 ffff88007a2c12a8 ffffffff81067bac
ffff88007a2c12d8
[   25.896343]  ffff88007a6be000 ffff880036711b18 ffff880036711800
ffff88007a6be6d8
[   25.896344] Call Trace:
[   25.896352]  [<ffffffff81733672>] dump_stack+0x46/0x58
[   25.896357]  [<ffffffff81067bac>] warn_slowpath_common+0x8c/0xc0
[   25.896360]  [<ffffffff81067c96>] warn_slowpath_fmt+0x46/0x50
...
[   25.896808]  [<ffffffff810e58d4>] SyS_init_module+0xb4/0x100
[   25.896811]  [<ffffffff81748d7f>] tracesys+0xe1/0xe6
[   25.896813] ---[ end trace 103b685a7f136965 ]---
[   25.896816] [drm:intel_dump_pipe_config], [CRTC:4][hw state] config for pipe
B
[   25.896817] [drm:intel_dump_pipe_config], cpu_transcoder: B

the full dmesg is attached.

Ubuntu 13.10 amd64 is running on the Asus F80L laptop

lspci:

00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960
Integrated Graphics Controller (primary) (rev 03) (prog-if 00 [VGA controller])
        Subsystem: ASUSTeK Computer Inc. Device 14e2
        Flags: bus master, fast devsel, latency 0, IRQ 46
        Memory at feb00000 (64-bit, non-prefetchable) [size=1M]
        Memory at e0000000 (64-bit, prefetchable) [size=256M]
        I/O ports at ec00 [size=8]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
        Capabilities: [d0] Power Management version 3
        Kernel driver in use: i915
00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated
Graphics Controller (secondary) (rev 03)
        Subsystem: ASUSTeK Computer Inc. Device 14e2
        Flags: bus master, fast devsel, latency 0
        Memory at fe900000 (64-bit, non-prefetchable) [size=1M]
        Capabilities: [d0] Power Management version 3

The kernel is drm-intel-nightly from 2014-01-26 taken at ubuntu
kernel-ppa/mainline

3.13.0-994-generic #201401260429 SMP Sun Jan 26 09:29:55 UTC 2014 x86_64 x86_64
x86_64 GNU/Linux

cat /sys/kernel/debug/dri/*/i915_error_state
no error state collected
no error state collected

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