[Bug 101724] New: [4X] Eaglelake Q45 8086:2e12: recurring pipe state doesn't match warnings

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101724

            Bug ID: 101724
           Summary: [4X] Eaglelake Q45 8086:2e12: recurring pipe state
                    doesn't match warnings
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: mrmazda at earthlink.net
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 132560
  --> https://bugs.freedesktop.org/attachment.cgi?id=132560&action=edit
Tumbleweed's Xorg.0.log using modeset(0) driver & drm.debug=0x06

System Information
        Product Name: OptiPlex 780
        Vendor: Dell Inc.
        Version: A15
        Release Date: 08/06/2013
# inxi -c0 -G
Graphics:  Card: Intel 4 Series Integrated Graphics Controller
           Display Server: X.org 1.19.3 drivers: modesetting (unloaded:
fbdev,vesa)
           tty size: 111x36 Advanced Data: N/A for root
# lspci -nnk | grep -A4 VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation 4 Series Chipset
Integrated Graphics Controller [8086:2e12] (rev 03)
        Subsystem: Dell Device [1028:0420]
        Kernel driver in use: i915
        Kernel modules: i915
00:02.1 Display controller [0380]: Intel Corporation 4 Series Chipset
Integrated Graphics Controller [8086:2e13] (rev 03)
libdrm2-2.4.81-1.1.x86_64
Mesa-17.1.3-165.1.x86_64
xf86-video-intel-2.99.917.770_gcb6ba2da-1.2.x86_64

Original mailing list thread 12 months ago:
http://www.spinics.net/lists/intel-gfx/msg100776.html
Current thread (base on which product and component here selected):
https://lists.opensuse.org/opensuse-kernel/2017-07/msg00002.html
Dates back at least to kernel 3.16.7/server 1.16.1 in openSUSE 13.2.
Continues with kernel 4.11.6, with both openSUSE Tumbleweed 20170706 and 42.3,
& Debian 9.
Does not occur until Xorg server is started.
Occurs whether using intel(0) or modeset(0) driver.
Does not occur with Dell 760 Q43 8086:2e12 or Biostar G41 8086:2e32 Eaglelakes.
Nothing is apparently wrong in DE (Plasma,KDE3,TDE) usability.
Example from dmesg without drm.debug=0x06:
[  115.694941] ------------[ cut here ]------------
[  115.694972] WARNING: CPU: 0 PID: 1306 at
../drivers/gpu/drm/i915/intel_display.c:13668
intel_atomic_commit_tail+0xcaa/0xe90 [i915]
[  115.694973] pipe state doesn't match!
[  115.694974] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4
dns_resolver nfs lockd grace sunrpc fscache af_packet iscsi_ibft
iscsi_boot_sysfs msr fuse nls_iso8859_1 nls_cp437 vfat fat snd_hda_codec_analog
snd_hda_codec_generic tpm_tis dell_wmi sparse_keymap tpm_tis_core ppdev
snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer
dell_smbios i915 video acpi_cpufreq drm_kms_helper drm shpchp iTCO_wdt dcdbas
iTCO_vendor_support coretemp kvm_intel mei_wdt fb_sys_fops syscopyarea
sysfillrect e1000e tpm ptp wmi pps_core snd parport_pc parport gpio_ich kvm
mei_me sysimgblt lpc_ich i2c_algo_bit mei i2c_i801 button pcspkr irqbypass
soundcore hid_generic usbhid serio_raw ehci_pci uhci_hcd ehci_hcd sr_mod cdrom
usbcore ata_generic sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc
scsi_dh_alua
[  115.695034] CPU: 0 PID: 1306 Comm: X Tainted: G        W      
4.11.8-1-default #1
[  115.695035] Hardware name: Dell Inc. OptiPlex 780                 /03NVJ6,
BIOS A15 08/06/2013
[  115.695036] Call Trace:
[  115.695049]  dump_stack+0x5c/0x78
[  115.695054]  __warn+0xbe/0xe0
[  115.695058]  warn_slowpath_fmt+0x4b/0x60
[  115.695090]  ? intel_pipe_config_compare+0x868/0xda0 [i915]
[  115.695121]  ? intel_dp_get_config+0x143/0x1d0 [i915]
[  115.695152]  intel_atomic_commit_tail+0xcaa/0xe90 [i915]
[  115.695165]  ? finish_wait+0x80/0x80
[  115.695195]  intel_atomic_commit+0x371/0x440 [i915]
[  115.695218]  ? drm_atomic_set_crtc_for_connector+0xbb/0xf0 [drm]
[  115.695231]  drm_atomic_helper_set_config+0x7d/0xd0 [drm_kms_helper]
[  115.695246]  drm_mode_set_config_internal+0x61/0x110 [drm]
[  115.695261]  drm_mode_setcrtc+0xfc/0x4d0 [drm]
[  115.695278]  drm_ioctl+0x1d5/0x420 [drm]
[  115.695294]  ? drm_mode_getcrtc+0x140/0x140 [drm]
[  115.695298]  do_vfs_ioctl+0x8d/0x5d0
[  115.695302]  ? handle_mm_fault+0xba/0x250
[  115.695305]  ? __fget+0x71/0xc0
[  115.695306]  SyS_ioctl+0x74/0x80
[  115.695311]  entry_SYSCALL_64_fastpath+0x1e/0xad
[  115.695315] ---[ end trace 3b46afd5b6daee62 ]---

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