I also experience this in kubuntu 15.10 (upgrade), laptop hp g840
multiple traces of this type after boot
[ 19.491720] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in
ips_enabled (expected 1, found 0)
[ 19.491751] [ cut here ]
[ 19.491764] WARNING: CPU: 2 PID: 1424 at
/build/linux-jJX2Dm/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326
check_crtc_state+0x2c5/0x440 [i915]()
[ 19.491765] pipe state doesn't match!
[ 19.491765] Modules linked in: pci_stub vboxpci(OE) vboxnetadp(OE)
vboxnetflt(OE) vboxdrv(OE) binfmt_misc bnep nls_iso8859_1 arc4 hp_wmi
sparse_keymap intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp
uvcvideo coretemp videobuf2_vmalloc crct10dif_pclmul videobuf2_memops btusb
videobuf2_core btrtl crc32_pclmul v4l2_common ghash_clmulni_intel btbcm
videodev btintel snd_hda_codec_hdmi bluetooth aesni_intel media
snd_hda_codec_idt snd_hda_codec_generic aes_x86_64 lrw gf128mul glue_helper
ablk_helper cryptd snd_hda_intel snd_hda_codec snd_hda_core iwlmvm snd_hwdep
input_leds mac80211 joydev snd_pcm serio_raw snd_seq_midi snd_seq_midi_event
snd_rawmidi snd_seq iwlwifi snd_seq_device snd_timer cfg80211 rtsx_pci_ms
lpc_ich snd memstick mei_me mei shpchp soundcore 8250_fintek hp_accel lis3lv02d
input_polldev
[ 19.491792] intel_smartconnect hp_wireless tpm_infineon mac_hid ip6t_REJECT
nf_reject_ipv6 nf_log_ipv6 kvm_intel kvm xt_hl ip6t_rt nf_conntrack_ipv6
nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG
xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast
nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter ip_tables
x_tables parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq hid_generic
usbhid hid rtsx_pci_sdmmc i915 rtsx_pci ahci i2c_algo_bit psmouse libahci
drm_kms_helper e1000e drm ptp pps_core wmi video
[ 19.491814] CPU: 2 PID: 1424 Comm: Xorg Tainted: GW OE
4.2.0-18-generic #22-Ubuntu
[ 19.491815] Hardware name: Hewlett-Packard HP EliteBook 840 G1/198F, BIOS
L71 Ver. 01.30 12/09/2014
[ 19.491816] 44c43655 88032c2c3878
817e8c09
[ 19.491818] 88032c2c38d0 88032c2c38b8
8107b3c6
[ 19.491819] 88032c2c38f8 88032c2c3960 88032aa5a800
0001
[ 19.491821] Call Trace:
[ 19.491823] [] dump_stack+0x45/0x57
[ 19.491826] [] warn_slowpath_common+0x86/0xc0
[ 19.491828] [] warn_slowpath_fmt+0x55/0x70
[ 19.491841] [] ? intel_pipe_config_compare+0xb31/0xc60
[i915]
[ 19.491853] [] check_crtc_state+0x2c5/0x440 [i915]
[ 19.491867] [] intel_modeset_check_state+0x21d/0x6d0
[i915]
[ 19.491880] [] intel_crtc_set_config+0x4c7/0x580 [i915]
[ 19.491888] [] drm_mode_set_config_internal+0x66/0x100
[drm]
[ 19.491892] [] restore_fbdev_mode+0xc2/0xf0
[drm_kms_helper]
[ 19.491897] []
drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x70 [drm_kms_helper]
[ 19.491909] [] intel_fbdev_restore_mode+0x1e/0x50 [i915]
[ 19.491923] [] i915_driver_lastclose+0xe/0x20 [i915]
[ 19.491929] [] drm_lastclose+0x2e/0x140 [drm]
[ 19.491934] [] drm_release+0x316/0x500 [drm]
[ 19.491936] [] __fput+0xe4/0x220
[ 19.491938] [] fput+0xe/0x10
[ 19.491939] [] task_work_run+0x85/0xb0
[ 19.491942] [] do_notify_resume+0x69/0x70
[ 19.491944] [] int_signal+0x12/0x17
[ 19.491945] ---[ end trace bff15b000dbe1aca ]---
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https://bugs.launchpad.net/bugs/1492764
Title:
[drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled
(expected 1, found 0)
Status in linux package in Ubuntu:
Incomplete
Bug description:
System: Kubuntu 15.10
Since kernel version 4.2 I have a few of this errors:
Sep 06 16:16:35 benediktZ50-70 kernel: [drm:intel_pipe_config_compare [i915]]
*ERROR* mismatch in ips_enabled (expected 1, found 0)
Sep 06 16:16:35 benediktZ50-70 kernel: [ cut here ]
Sep 06 16:16:35 benediktZ50-70 kernel: WARNING: CPU: 0 PID: 187 at
/build/linux-4dBub_/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12324
check_crtc_state+0x2c5/0x440 [i915]()
Sep 06 16:16:35 benediktZ50-70 kernel: pipe state doesn't match!
Sep 06 16:16:35 benediktZ50-70 kernel: Modules linked in: rtsx_usb_sdmmc
rtsx_usb i915 i2c_algo_bit drm_kms_helper psmouse ahci drm libahci r8169 mii
sdhci_acpi video sdhci i2c_hid hid
Sep 06 16:16:35 benediktZ50-70 kernel: CPU: 0 PID: 187 Comm: plymouthd
Tainted: GW 4.2.0-7-generic #7-Ubuntu
Sep 06 16:16:35 benediktZ50-70 kernel: Hardware name: LENOVO 20354/Lancer
5A5, BIOS 9BCN91WW 07/21/2015
Sep 06 16:16:35 benediktZ50-70 kernel: c023f1e8 8802413277e8
817b0465
Sep 06 16:16:35 benediktZ50-70 kernel: 880241327838
