I have the same problem using precision 5510 + Dell dock, used to have
perfectly working 3 monitors setup, which no longer works after the latest
update (4.4.0-77-generic).
I can no longer use 3 screen setup, 2 monitors setup is barely working and I
often need to reset it after boot, reordering
Affects me as well on a Thinkpad T460s, on a Debian 4.8.15-2
(backported) Kernel.
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Title:
WARN_ON(!wm_changed) skl_update_other_pipe_wm+0x16c/0x1
Same here on Dell E7470 (SKU:06DC),i5-6300U (Skylake) & 1366x768 model
(non-standards I think not being related just to mention: UEFI+grub,
SecureBoot, DualBoot, LL kernel, LVM & LUKS FDE & custom keyscript)
Display quirks from time to time and I see lines below in dmesg.
Not related to screen l
Same on 16.04 on on XPS 15.
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Title:
WARN_ON(!wm_changed) skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
To manage notifications about this bug
Ok so I traced this to occuring after you install the nvidia driver.
Using the intel card or the nouveau drivers the kernel log was clean. It
was only after installing nvidia drivers (I tried various versions, from
367 up to 375) that I saw that in the kernel logs.
Either way, for me it does not s
Also crashing here.. this just started... two kernels ago it was
working.
[9.191708] [ cut here ]
[9.191726] WARNING: CPU: 3 PID: 1380 at
/build/linux-CcaKcB/linux-4.4.0/ubuntu/i915/intel_pm.c:3675
skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]()
[9.191727] W
I believe this is the same issue with Ubuntu 16.04/Mint 18.1 on a Dell
Precision 5510 laptop. This shows up constantly in the kernel logs
(kernel 4.4.0-51-generic)
[ 15.021294] [ cut here ]
[ 15.021309] WARNING: CPU: 0 PID: 1564 at
/build/linux-j9zxaP/linux-4.4.0/ubu
I tried 4.8-rc4 and I didn't see the skl_update_other_pipe_wm warning
any more. Unfortunately there are regular video glitches and
suspend/resume is broken, so the 4.8 kernel isn't usable yet.
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You can try the mainline 4.8-rc builds here:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8-rc4/
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Title:
WARN_ON(!wm_changed) skl_update_oth
4.8 sounds a long way away, is there a way i can get this on Xenial now
to get my dual screen setup working? A PPA or something?
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Title:
WARN_ON(
I see this on my Lenovo X1 Carbon (4th gen), a skylake machine.
I believe this upstream bug is related:
https://bugs.freedesktop.org/show_bug.cgi?id=89055
Comment #62 says:
The series that fixes this bug has now been merged to our drm-intel-
nightly branch. It should land upstream in kernel 4
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
WARN_ON(!wm_changed) skl_update_other_pipe_wm+0x16c/0x180 [i915_bpo]
Tuxedo Book BU 1505
I have black screen during 2 seconds and return. (external monitor 2K by HDMI)
Jun 14 15:22:29 tuxedo kernel: [23138.707940] [ cut here
]
Jun 14 15:22:29 tuxedo kernel: [23138.708030] WARNING: CPU: 3 PID: 1260 at
/build/linux-FvcHlK/linux-4.4.0/ubuntu/
Would it only collect more data then? I don't use the default kernel as
it's completely unstable on this laptop.
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Title:
WARN_ON(!wm_changed) skl
blabber, to clarify, only while booted into the default Ubuntu kernel
(not upstream/mainline).
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Title:
WARN_ON(!wm_changed) skl_update_other_pipe
apport information
** Tags added: apport-collected xenial
** Description changed:
Hi,
I'm using a new Skylake Thinkpad T460s with and external monitor
connected via Displayport and Ubuntu 16.04 and the latest kernel as of
today: Linux test 4.4.0-17-generic #33-Ubuntu SMP Tue Mar 29 17
blabber, could you please provide the results requested in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1567417/comments/2
?
** Tags added: kernel-bug-exists-upstream-4.6-rc7
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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This appears to be reproducible by changing to text console, and then
back to X
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Title:
WARN_ON(!wm_changed) skl_update_other_pipe_wm+0x16c/0x180
This is still happening on kernel 4.6.0-040600rc7-generic from
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc7-wily/
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Title:
WARN_ON(!wm_c
I have the same on an Intel NUC6i5SYK on ubuntu 16.04 with kernel
4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64
x86_64 x86_64 GNU/Linux. Two identical DVI monitors are attached, one
via HDMI, one via Displayport:
[3.216454] [ cut here ]
[3.2164
Happened on 4.2.0-35-generic #40-Ubuntu SMP x86_64 x86_64 x86_64
GNU/Linux
Apr 29 11:49:47 MyLap thermald[690]: Set : threshold:9, temperature:9,
cdev:9(rapl_controller), curr_state:50, max_state:1500
Apr 29 11:49:49 MyLap kernel: [ 108.430293] [ cut here
]--
This one still appears with kernel 4.6.0-040600rc4-generic:
[ 18.212146] [ cut here ]
[ 18.212175] WARNING: CPU: 0 PID: 1052 at
/home/kernel/COD/linux/drivers/gpu/drm/i915/intel_pm.c:3572
skl_update_other_pipe_wm+0x16c/0x180 [i915]
[ 18.212176] WARN_ON(!wm_changed)
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.6 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix th
I cannot run apport-collect
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
WARN_ON(!wm_changed) skl_update_other_p
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