[Bug 79261] [snb] [Samsung NP530U3C-A02CL] [drm:ilk_display_irq_handler] *ERROR* Pipe A FIFO underrun

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=79261

Norbert Kiesel <nk at iname.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nk at iname.com

--- Comment #27 from Norbert Kiesel <nk at iname.com> ---
Another "me too".  Interestingly, this just started today on a Debian testing
system with an external monitor, and no kernel (or other relevant) upgrade
happened recently.

I can "fix" this by switching to a virtual console, and then switching back. 
Since it started, I had 7 of these within 2 hours.

[457546.679116] WARNING: CPU: 0 PID: 1022 at
/build/linux-y7bjb0/linux-3.16.7-ckt4/drivers/gpu/drm/i915/intel_pm.c:5996
intel_display_power_put+0x111/0x150 [i915]()
[457546.679130] Modules linked in: nls_utf8 nls_cp437 vfat fat usb_storage veth
xt_nat xt_tcpudp xt_addrtype xt_conntrack ipt_MASQUERADE iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntra
ck bridge stp llc aufs(C) iptable_filter ip_tables x_tables hid_generic usbhid
tun nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi iT
CO_wdt iTCO_vendor_support joydev dell_wmi sparse_keymap ppdev dell_laptop
dcdbas x86_pkg_temp_thermal intel_powerclamp intel_rapl wl(PO) coretemp
kvm_intel kvm crc32_pclmul ghash_clmulni_intel radeon aesni_inte
l aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd cfg80211 psmouse evdev
pcspkr ttm rfkill lpc_ich serio_raw i2c_i801 mfd_core i915 wmi snd_hda_intel
snd_hda_controller drm_kms_helper
[457546.679146]  parport_pc battery snd_hda_codec parport dell_smo8800
snd_hwdep drm snd_pcm snd_timer i2c_designware_platform video i2c_algo_bit
i2c_designware_core snd processor soundcore ac button shpchp mei_me mei fuse
autofs4 ext4 crc16 mbcache jbd2 dm_mod sg sd_mod crc_t10dif crct10dif_generic
ahci libahci crct10dif_pclmul crct10dif_common crc32c_intel libata ehci_pci
xhci_hcd ehci_hcd scsi_mod e1000e sdhci_pci ptp usbcore pps_core usb_common
thermal thermal_sys sdhci_acpi sdhci mmc_core i2c_hid hid i2c_core
[457546.679148] CPU: 0 PID: 1022 Comm: Xorg Tainted: P        WC O 
3.16.0-4-amd64 #1 Debian 3.16.7-ckt4-3
[457546.679148] Hardware name: Dell Inc. Precision M4800/0WJNC2, BIOS A08
05/02/2014
[457546.679150]  0000000000000009 ffffffff815096a7 0000000000000000
ffffffff810676f7
[457546.679151]  0000000000000000 ffffffffa04c97a0 ffff880805550000
0000000000000001
[457546.679151]  ffff880805558520 ffffffffa0421171 0000000000000000
ffff880805550000
[457546.679152] Call Trace:
[457546.679156]  [<ffffffff815096a7>] ? dump_stack+0x41/0x51
[457546.679158]  [<ffffffff810676f7>] ? warn_slowpath_common+0x77/0x90
[457546.679164]  [<ffffffffa0421171>] ? intel_display_power_put+0x111/0x150
[i915]
[457546.679172]  [<ffffffffa0467424>] ?
modeset_update_crtc_power_domains+0x204/0x210 [i915]
[457546.679178]  [<ffffffffa0467ede>] ? __intel_set_mode+0x5ce/0x1560 [i915]
[457546.679184]  [<ffffffffa046b492>] ? intel_set_mode+0x12/0x30 [i915]
[457546.679189]  [<ffffffffa046c39f>] ? intel_crtc_set_config+0x8cf/0xd50
[i915]
[457546.679195]  [<ffffffffa03a1d11>] ? drm_mode_set_config_internal+0x61/0xe0
[drm]
[457546.679198]  [<ffffffffa03d5a6b>] ? restore_fbdev_mode+0xab/0xd0
[drm_kms_helper]
[457546.679200]  [<ffffffffa03d75f0>] ?
drm_fb_helper_restore_fbdev_mode_unlocked+0x20/0x60 [drm_kms_helper]
[457546.679203]  [<ffffffffa03d764e>] ? drm_fb_helper_set_par+0x1e/0x50
[drm_kms_helper]
[457546.679205]  [<ffffffff8130ed5e>] ? fb_set_var+0x15e/0x3b0
[457546.679208]  [<ffffffffa03f351e>] ? codec_exec_verb+0xde/0x260
[snd_hda_codec]
[457546.679211]  [<ffffffff8130644b>] ? fbcon_blank+0x1cb/0x2b0
[457546.679213]  [<ffffffff81379671>] ? do_unblank_screen+0xb1/0x1d0
[457546.679215]  [<ffffffff8136fd43>] ? complete_change_console+0x53/0xe0
[457546.679216]  [<ffffffff81370d19>] ? vt_ioctl+0xf49/0x10d0
[457546.679218]  [<ffffffff81364fdc>] ? tty_ioctl+0x26c/0xb40
[457546.679221]  [<ffffffff813aadb9>] ? __pm_runtime_suspend+0x69/0x80
[457546.679222]  [<ffffffff811b9dcf>] ? do_vfs_ioctl+0x2cf/0x4b0
[457546.679223]  [<ffffffff811a9ead>] ? __sb_end_write+0x2d/0x70
[457546.679225]  [<ffffffff811a7c32>] ? vfs_write+0x172/0x1f0
[457546.679226]  [<ffffffff811ba031>] ? SyS_ioctl+0x81/0xa0
[457546.679228]  [<ffffffff815117a8>] ? page_fault+0x28/0x30
[457546.679229]  [<ffffffff8150f76d>] ? system_call_fast_compare_end+0x10/0x15
[457546.679230] ---[ end trace 1766ec08aeb5f50c ]---
[457546.960911] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch
fifo underrun on pch transcoder A
[457546.960912] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO
underrun
[457546.975807] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared
fifo underrun on pipe B
[457546.975808] [drm:ivb_err_int_handler] *ERROR* Pipe B FIFO underrun
[457547.007403] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off

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