My solution was to re-select gdm as the display manager; not even de-select then re-select. Something was re-linked at that point but i have no idea what.
----- Reply message -----
From: "Daniel Elstner" <email address hidden>
To: <email address hidden>
Subject: [Bug 1492764] Re: [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0)
Date: Wed, Oct 28, 2015 13:28
I had the same problem, also on a T440s. Initially Ubuntu GNOME 15.10 worked just fine -- until it didn't.
However, in a strange twist contrary to comment #21, I got it to work again by switching from lightdm *to* gdm.
My solution was to re-select gdm as the display manager; not even de-select then re-select. Something was re-linked at that point but i have no idea what.
----- Reply message ----- pipe_config_ compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0)
From: "Daniel Elstner" <email address hidden>
To: <email address hidden>
Subject: [Bug 1492764] Re: [drm:intel_
Date: Wed, Oct 28, 2015 13:28
I had the same problem, also on a T440s. Initially Ubuntu GNOME 15.10 worked just fine -- until it didn't.
However, in a strange twist contrary to comment #21, I got it to work again by switching from lightdm *to* gdm.
-- /bugs.launchpad .net/bugs/ 1492764
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Title: intel_pipe_ config_ compare [i915]] *ERROR* mismatch in ips_enabled
[drm:
(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) linux-4dBub_ /linux- 4.2.0/drivers/ gpu/drm/ i915/intel_ display. c:12324 check_crtc_ state+0x2c5/ 0x440 [i915]() 465>] dump_stack+ 0x45/0x57 536>] warn_slowpath_ common+ 0x86/0xc0 5b6>] warn_slowpath_ fmt+0x46/ 0x50 091>] ? intel_pipe_ config_ compare+ 0xb31/0xc60 [i915] 485>] check_crtc_ state+0x2c5/ 0x440 [i915] f3e>] intel_modeset_ check_state+ 0x20e/0x6b0 [i915] 0e7>] intel_crtc_ set_config+ 0x4c7/0x580 [i915] 915>] ? drm_mode_ create+ 0x25/0x60 [drm] 036>] drm_mode_ set_config_ internal+ 0x66/0x100 [drm] 5f8>] drm_mode_ setcrtc+ 0x3a8/0x4c0 [drm] 365>] drm_ioctl+ 0x125/0x610 [drm] 250>] ? drm_mode_ setplane+ 0x1b0/0x1b0 [drm] fd5>] do_vfs_ ioctl+0x285/ 0x470 159>] ? do_munmap+ 0x349/0x480 239>] SyS_ioctl+0x79/0x90 cf2>] entry_SYSCALL_ 64_fastpath+ 0x16/0x75
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/
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: G W 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: ffffffffc023f1e8 ffff8802413277e8 ffffffff817b0465 0000000000000000
Sep 06 16:16:35 benediktZ50-70 kernel: ffff880241327838 ffff880241327828 ffffffff81076536 ffff880241327858
Sep 06 16:16:35 benediktZ50-70 kernel: ffff8802413278c0 ffff880241152000 0000000000000001 ffff880241152350
Sep 06 16:16:35 benediktZ50-70 kernel: Call Trace:
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffff817b0
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffff81076
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffff81076
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffffc01d3
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffffc01d3
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffffc01e6
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffffc01e8
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffffc009f
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffffc0099
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffffc009d
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffffc008e
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffffc009d
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffff811ff
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffff811ac
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffff81200
Sep 06 16:16:35 benediktZ50-70 kernel: [<ffffffff817b6
Sep 06 16:16:35 benediktZ50-70 kernel: ---[ end trace 724377a3c01e4270 ]---
I will check next week if these errors have any impact on my system.
This is a Nvidia Optimus System with the Intel graphic card activated
by default.
ProblemType: Bug 4.2.0-7- generic 4.2.0-7.7 gnature: Ubuntu 4.2.0-7.7-generic 4.2.0 nUse: snd/controlC0: benedikt 1550 F.... pulseaudio snd/controlC1: benedikt 1550 F.... pulseaudio vice: UUID=3383b02e- b89c-462c- 903a-cb936e81b2 bf edia: Kubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141218) Line: BOOT_IMAGE= /boot/vmlinuz- 4.2.0-7- generic root=UUID= b549945a- 67ac-4d14- 849c-b54e561d47 cc ro quiet splash vt.handoff=7 eVersions: restricted- modules- 4.2.0-7- generic N/A backports- modules- 4.2.0-7- generic N/A asset.tag: No Asset Tag version: 31900058WIN asset.tag: No Asset Tag vendor: LENOVO version: Lenovo Z50-70 bvr9BCN91WW: bd07/21/ 2015:svnLENOVO: pn20354: pvrLenovoZ50- 70:rvnLENOVO: rnLancer5A5: rvr31900058WIN: cvnLENOVO: ct10:cvrLenovoZ 50-70: version: Lenovo Z50-70
DistroRelease: Ubuntu 15.10
Package: linux-image-
ProcVersionSi
Uname: Linux 4.2.0-7-generic x86_64
ApportVersion: 2.18-0ubuntu9
Architecture: amd64
AudioDevicesI
USER PID ACCESS COMMAND
/dev/
/dev/
CurrentDesktop: KDE
Date: Sun Sep 6 16:22:48 2015
HibernationDe
InstallationDate: Installed on 2014-12-21 (259 days ago)
InstallationM
MachineType: LENOVO 20354
ProcFB: 0 inteldrmfb
ProcKernelCmd
RelatedPackag
linux-
linux-
linux-firmware 1.147
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/21/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: 9BCN91WW
dmi.board.
dmi.board.name: Lancer 5A5
dmi.board.vendor: LENOVO
dmi.board.
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 20354
dmi.product.
dmi.sys.vendor: LENOVO
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