*ERROR* The master control interrupt lied (SDE)!

Fuxino · 2015-12-19 15:55:27

When booting my laptop I'm often (strangely enough, not always) getting this error message, usually repeated more than once:

[drm:ffffffffc017d128] *ERROR* The master control interrupt lied (SDE)!

This started happening after the last grsecurity kernel update.
I think it might be related to the i915 module (at least, I found some similar reports online related to that), but else I'm not sure what this means. Everything seems to work fine, but I don't know if I can safely ignore this. Someone know what this error means?

$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)

$ uname -a
Linux Fux-PC 4.3.3.201512162141-1-grsec #1 SMP PREEMPT Sat Dec 19 15:24:32 CET 2015 x86_64 GNU/Linux

pypi · 2015-12-20 18:18:37

I just came across this: http://www.spinics.net/lists/intel-gfx/msg81325.html
It appears to be largely unimportant, ie just a warning...

Fuxino · 2015-12-21 12:08:14

pypi wrote:

I just came across this: http://www.spinics.net/lists/intel-gfx/msg81325.html
It appears to be largely unimportant, ie just a warning...

Nice, thanks

Considering also that all seem to work fine I'll just ignore it and hope it will be fixed...

klemmster · 2015-12-23 20:52:06

I'm seeing a very similar message:

Dec 23 21:43:50 lazzle kernel: [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!

but didn't notice anything not working.

gccplus · 2016-01-08 18:02:51

klemmster wrote:

I'm seeing a very similar message:
Dec 23 21:43:50 lazzle kernel: [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
but didn't notice anything not working.

This happened to me either. I think it seems to be an intel graphics card issue.
But I have a standard Nvidia graphics card.

Here is the result of these command:

$ dmesg | grep i915
[ 2.180149] i915 0000:00:02.0: can't derive routing for PCI INT A
[ 2.180151] i915 0000:00:02.0: PCI INT A: no GSI
[ 2.213474] [drm] Initialized i915 1.6.0 20150731 for 0000:00:02.0 on minor 0
[ 3.306941] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[ 3.307042] snd_hda_intel 0000:00:03.0: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 3.309344] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
$ cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-linux root=UUID=... rw quiet

I didn't notice something not working, although my laptop reboot when it should go hibernate. But I'm not sure if it is because of that.
I also wondering if I should put a kernel parameter: i915.preliminary_hw_support=1
Because the [arch wiki page](https://wiki.archlinux.org/index.php/Intel_graphics) said it should be added for the new generation card, but 'as of kernel 4.3.x, this should no longer be necessary.'

Last edited by gccplus (2016-01-08 18:03:28)

emfol · 2016-01-17 20:56:17

I was seeing that very same message on my logs but it disappeared when I added the following modules to my mkinitcpio.conf file.

I updated the MODULES section of my /etc/mkinitcpio.conf file as follows:
MODULES="intel_agp i915"

After that I just run "mkinitcpio -p linux" and rebooted...
The message was gone...

dgetux · 2016-01-18 13:50:01

emfol wrote:

I was seeing that very same message on my logs but it disappeared when I added the following modules to my mkinitcpio.conf file.
I updated the MODULES section of my /etc/mkinitcpio.conf file as follows:
MODULES="intel_agp i915"
After that I just run "mkinitcpio -p linux" and rebooted...
The message was gone...

I tried your solution and, in my case, it's not working. Here's my dmesg.

$ uname -a
Linux Laptop 4.3.3-2-ARCH #1 SMP PREEMPT Wed Dec 23 20:09:18 CET 2015 x86_64 GNU/Linux

anothernode · 2016-01-19 09:15:25

I tried emfol's suggestion too. It has no effect on my system.

I have one piece of information to add: I only get the error when my Thinkpad (T450s) is connected to the Ultra Dock...

FillFeile · 2016-01-19 16:50:01

I'm getting this message too.

[drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!

And like @anothernode said this could be related to the dock. I have a ThinkPad X1 connected to the screens via the OneLink Dock.

Last edited by FillFeile (2016-01-19 16:50:46)

a1rolo · 2016-01-27 16:05:24

emfol wrote:

I updated the MODULES section of my /etc/mkinitcpio.conf file as follows:
MODULES="intel_agp i915"
After that I just run "mkinitcpio -p linux" and rebooted...
The message was gone...

The message went away. I am on a Thinkpad T450, no dock.

vtrac · 2016-01-28 05:41:17

FWIW, I am getting this as well. 3rd gen X1 Carbon connected to a Dell 2715Q 4k monitor. I also tried adding intel_agp to my mkinitcpio.conf, but that didn't help.

Last edited by vtrac (2016-01-28 05:42:03)

blux · 2016-01-28 08:54:58

FWIW, I get this message too, also with a T450s. I get the message always, whether the laptop is on the dock or not. But when it is docked, the message is printed more frequently.

Relevant link: https://bugs.launchpad.net/ubuntu/+sour … mments=all

It seems 4.5 will contain a fix for this in the sense that the message is no longer printed.

Last edited by blux (2016-01-28 09:13:32)

njb · 2016-03-10 08:35:15

I get the same error I have a NUC fifth generation with Intel graphic Card
No change after emfol config !!

[njb@pacbang-nuc ~]$ uname -a
Linux pacbang-nuc 4.4.3-1-ARCH #1 SMP PREEMPT Fri Feb 26 15:09:29 CET 2016 x86_64 GNU/Linux

[njb@pacbang-nuc ~]$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)

Arch Linux

#1 2015-12-19 15:55:27