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Questions tagged [interrupts]

31 questions
9
votes
2 answers

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

I get this error after installing Kubuntu 15.10 when restart Kubuntu: [ 74.873008] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)! I use kernel 4.2.0-16 and KDE 5.4.2. This error wil show on black background when i…
Ryan Le
  • 91
5
votes
4 answers

Touchpad causes huge amount of interrupts and high power usage

I have an issue with the touchpad on my notebook where if I use it, it causes a high amount of interrupts which results in significantly higher CPU usage and power drain. The following snippet is after 5 minutes of powering the device on. Notice the…
ddominnik
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5
votes
1 answer

Ubuntu 20.04 - High load on CPU because of IRQ 126

HP Pavilion - 14-al103ne Ubuntu 20.04 'top' command shows irq/126-aerdrv always running eating a lot of CPU.Top screenshot 'powertop' and 'cat /proc/interrupts' also attached. Interrupts and Powertop I come from 16.04 where i had a similar problem…
Rahul Iyer
  • 53
4
votes
1 answer

High number of interrupts on Ubuntu 15.04 on Dell XPS 13 2015 (9343)

In powertop I noticed a high number of interrupts 'INT3432', which I think would be either the touchpad or sound card. I am concerned on the effect on the power consumption and battery life. FYI I applied all the recommmended powertop settings. In…
tibo
  • 41
2
votes
0 answers

Ubuntu 16.04 a lot of kworker processes

I have an ubuntu 16.04 server with kernel 4.10.0-37-generic. It's metal server, not virtual. There are a number of kworker processes (about 109-115), every kworker consumes CPU (up to 4%). Also I guess that they impact on load average. I have also a…
Freemmy
  • 21
2
votes
0 answers

How to set Intel SSD NVME irq Affinity on Ubuntu 16.04 LTS?

Thanks for reading this question (I looked everywhere to find an existing answer without success...) The question is in the title but here are more details: Here is my setup: I'm working with a S2600WT server from Intel with two CPUs (Xeon v4 with…
Jeremie Cohen
  • 21
2
votes
2 answers

Is there a way to detect whether a skype call is in progress? (dbus? pulseaudio usage?)

I built a little gadget that hangs on my office door. I can light it up via a script on my computer to indicate I'm busy and people shouldn't enter. I'd like to run that script, a.k.a. signalling I'm busy, whenever I'm in a Skype call. Is there a…
con-f-use
  • 19,041
2
votes
0 answers

Boot time errors about ACPI, unsupported splx structure and a lying master control interrupt

I am getting boot time errors in ubuntu 14.04. After booting it works without any problem. Errors displayed are: 0.669116] dmar: Failed to find handle for ACPI object \ SB.PCI0SD After SD some numbers are also displayed (I could not capture them).…
Saket Jhunjhunwala
  • 21
2
votes
0 answers

enable parallel port interrupts/ access in Ubuntu 12.04

I need to interface a mid 1990s laboratory instrument to Ubuntu 12.04 for moderately high speed data acquisition ( 100 Usec) from the instrument . The instrument requires ( will not even run without ) an interrupt driven IEEE1284 parallel port…
Alpha Centauri
  • 21
2
votes
0 answers

Error on MPI while executing REGCM

While starting a simulation on REGCM, I executed the command mpirun -np 2 ./bin/regcmMPI sensitivity01.in Which gives me the following: This is RegCM trunk SVN Revision: compiled at: data : Sep 9 2021 time: 18:24:31 : this run start at :…
jnava1612
  • 21
1
vote
1 answer

Does my PCI card have shared interrupts?

I'm trying to get VGA passthrough working on VirtualBox with a Windows guest. Per the VirtualBox manual: Limitations: 1. Only PCI cards with non-shared interrupts (such as using MSI on host) are supported at the moment. How do I determine whether…
Autumn
  • 684
1
vote
0 answers

IRQ from Realtek WiFi are loading CPU

I have problem with my Toshiba Satellite C850-D3K laptop with Ubuntu 16.04 installed and RTL8723AE wireless adapter. The thing is that CPU consumption may go up after a while (30 mins - 2 hours) by no reason. See image below: $ cat /proc/interrupts…
Kanris
  • 9
1
vote
0 answers

Constant high CPU usage because of sound card interrupt

One of my 16 CPU cores is always working at around 50% CPU capacity. There is nothing showing in htop or top which indicates a high usage, so I started digging and found with (cat /proc/interrupts) that the cause of the high usage (and high…
Ron Chots
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1
vote
0 answers

Touchpad utilizes CPU even if totally disabled in BIOS and X

I have problems with CPU spikes from irq/204-rmi4_sm when I touch the touchpad in a Lenovo Thinkpad Extreme. I have disabled the Touchpad in BIOS as well as in X. However still the IRQ is fired every time the pad is touched or palm rests on it. It…
Thomas
  • 440
1
vote
0 answers

Why would KVM intermittently cause 100% CPU load by "System interrupts" in a Windows 10 VM?

I'm running a hundred Ubuntu 16.04 LTS servers with basically identical hardware distributed worldwide. (I'm working on upgrading them to 20.04 LTS but certain unfortunate design decisions on the part of Ubuntu are still blocking this.) Each of…
Tilman
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