[Bug 73662] New: xf86-video-intel-2.99.907: [drm:i915_reset] *ERROR* Failed to reset chip.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73662

          Priority: medium
            Bug ID: 73662
          Assignee: chris at chris-wilson.co.uk
           Summary: xf86-video-intel-2.99.907: [drm:i915_reset] *ERROR*
                    Failed to reset chip.
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: tsdh at gnu.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

Since upgrading from xf86-video-intel-2.21.15 to 2.99.907-12.99.907, I get
frequent crashes when moving or resizing windows.  Such a crash leaves the
graphics card completely disfunctional so that I even cannot switch to a
console anymore.

The dmesg output is like:

[ 1762.336549] [drm] stuck on render ring
[ 1762.336562] [drm] capturing error event; look for more information in
/sys/class/drm/card0/error
[ 1762.341549] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo
(0xd73f000 ctx 0) at 0xd73f12c
[ 1762.409886] [drm] GMBUS [i915 gmbus vga] timed out, falling back to bit
banging on pin 2
[ 1762.846568] [drm:i915_reset] *ERROR* Failed to reset chip.
[ 1763.430449] ------------[ cut here ]------------
[ 1763.430472] WARNING: CPU: 0 PID: 303 at
drivers/gpu/drm/i915/intel_display.c:929 assert_pll+0x64/0x70 [i915]()
[ 1763.430474] PLL state assertion failure (expected on, current off)
[ 1763.430475] Modules linked in: fuse iTCO_wdt iTCO_vendor_support joydev
snd_hda_codec_analog coretemp kvm_intel kvm pcmcia btusb bluetooth microcode
lpc_ich psmouse pcspkr i915 r592 serio_raw snd_hda_intel memstick snd_hda_codec
i2c_i801 arc4 evdev yenta_socket snd_hwdep pcmcia_rsrc pcmcia_core
drm_kms_helper snd_pcm snd_page_alloc snd_timer thinkpad_acpi e1000e drm nvram
snd iwl4965 iwlegacy mac80211 cfg80211 soundcore i2c_algo_bit shpchp intel_agp
mei_me rfkill i2c_core ac intel_gtt mei wmi thermal tpm_tis tpm tpm_bios video
battery ptp pps_core button acpi_cpufreq processor ext4 crc16 mbcache jbd2
hid_generic usbhid hid sr_mod cdrom sd_mod ata_generic ahci libahci ata_piix
sdhci_pci sdhci mmc_core firewire_ohci firewire_core crc_itu_t pata_acpi
ehci_pci uhci_hcd ehci_hcd libata usbcore usb_common
[ 1763.430534]  scsi_mod
[ 1763.430537] CPU: 0 PID: 303 Comm: Xorg Not tainted 3.12.7-2-ARCH #1
[ 1763.430539] Hardware name: LENOVO 64669YG/64669YG, BIOS 7LETC5WW (2.25 )
11/14/2008
[ 1763.430541]  0000000000000009 ffff8800bafed9f8 ffffffff814ec113
ffff8800bafeda40
[ 1763.430544]  ffff8800bafeda30 ffffffff81061b8d 0000000000000001
ffff8800ba7c4000
[ 1763.430547]  ffff880133ec2000 0000000000000000 0000000000000000
ffff8800bafeda90
[ 1763.430550] Call Trace:
[ 1763.430557]  [<ffffffff814ec113>] dump_stack+0x54/0x8d
[ 1763.430562]  [<ffffffff81061b8d>] warn_slowpath_common+0x7d/0xa0
[ 1763.430565]  [<ffffffff81061bfc>] warn_slowpath_fmt+0x4c/0x50
[ 1763.430574]  [<ffffffffa0617c40>] ? i915_write32+0xb0/0x1a0 [i915]
[ 1763.430584]  [<ffffffffa05ddcc4>] assert_pll+0x64/0x70 [i915]
[ 1763.430592]  [<ffffffffa05dde2c>] intel_crtc_load_lut+0x15c/0x170 [i915]
[ 1763.430601]  [<ffffffffa05deb3e>] i9xx_crtc_enable+0x20e/0x420 [i915]
[ 1763.430610]  [<ffffffffa05e5317>] __intel_set_mode+0x857/0x13d0 [i915]
[ 1763.430621]  [<ffffffffa05e8336>] intel_set_mode+0x16/0x30 [i915]
[ 1763.430630]  [<ffffffffa05e8c33>] intel_crtc_set_config+0x7e3/0x9d0 [i915]
[ 1763.430639]  [<ffffffffa04b550d>] drm_mode_set_config_internal+0x5d/0xe0
[drm]
[ 1763.430646]  [<ffffffffa04b8197>] drm_mode_setcrtc+0xf7/0x650 [drm]
[ 1763.430652]  [<ffffffffa04a8c62>] drm_ioctl+0x502/0x630 [drm]
[ 1763.430656]  [<ffffffff810715a2>] ? __set_task_blocked+0x32/0x70
[ 1763.430661]  [<ffffffff811b6435>] do_vfs_ioctl+0x2e5/0x4d0
[ 1763.430663]  [<ffffffff811b66a1>] SyS_ioctl+0x81/0xa0
[ 1763.430667]  [<ffffffff814fac2d>] system_call_fastpath+0x1a/0x1f
[ 1763.430669] ---[ end trace 75438fb0733a4063 ]---
[ 1763.430697] ------------[ cut here ]------------

I'll attach two complete dmesg logs (one with --enable-glamor, one with
--disable-glamor).

I'm using Arch Linux where I reported the bug first:
https://bugs.archlinux.org/task/38525

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