0
votes
1answer
56 views
+50

Why does my computer (almost) randomly power off? (GPU Kernel Panics?)

I've always had a problem running any sort of Linux distro on my machine. I'm a gamer and tend to spend most of my time in Windows and I have never had any issues when it comes to stability of my PC, ...
2
votes
2answers
73 views

Crash after modifying rc.local file to solve overheating issue

I made a dual boot on my laptop with Windows 8. After installing Ubuntu, I notices that my laptop was really hot, and realized that both GPUs are working, my integrated Intel GPU and secondary NVidia. ...
2
votes
1answer
361 views

Suspend test seems to have killed my Intel NUC [closed]

I was running the daily live Ubuntu 14.04-trusty-desktop-amd64 2014-01-24 on an Intel NUC D34010WYK. It has 16GB RAM and a Crucial 240GB SSD. Was working flawlessly, except for sound, so I started ...
1
vote
0answers
99 views

Apple aluminium keyboard hub is supplied to little power

I have an Apple aluminium keyboard with an integrated hub. On Mac OS X, I'm able to connect both my mouse and a USB pen drive while on Linux, the power limit is exceeded when connecting more than one ...
0
votes
0answers
184 views

Kernel resetting SATA link

On current (k)ubuntu saucy I see occasionally on my Lenovo Thinkpad T520 with dmesg: [23391.818508] ata4: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen [23391.818513] ata4: irq_stat ...
0
votes
0answers
335 views

Samsung Series 9 Ultrabook (np900x3e) Overheating

I have the June version of the Series 9 from Samsung, and I'm running Saucy Salamander to get the touchpad working correctly. The laptop is overheating though fairly often, and I haven't found any ...
3
votes
1answer
156 views

What will be the power backend for (K)Ubuntu 13.10?

I have Kubuntu 13.04 installed. KDE uses powerdevil to manage hibernate/sleep, which in turns seems to use pm-utils backend. pm-utils is unmaintained, and broken at this point1. For example, I had to ...
0
votes
0answers
80 views

Ubuntu 13.04 runs perfectly without battery, but with battery it doesn't boot

Ubuntu 13.04 runs smoothly if I have no battery on my laptop, but when I insert the battery my pc won't reset or turn on after a shutdown. The specifications of the laptop are the following: Lenovo ...
4
votes
1answer
253 views

How to automatically slow CPU instead of starting fans?

In Windows' power options, you had the ability to configure your system to use either 'active' or 'passive' cooling schemes. In the 'active' scheme, the fans would start running faster as the CPU got ...
0
votes
1answer
177 views

keyboard doesn't respond after suspend [closed]

when I put my ubuntu on suspend mode, the keyboard stops working, and I cannot get out of suspend. I need to shutdown my laptop manually and reboot. I have lenovo S10-3. help anybody?
2
votes
1answer
2k views

My fan is always on but not in MSWindows (HP elitebook 8460p)

Problem: My laptop(new) fan is ALWAYS on. Question: What can I do to solve this issue? Situation: HP Elitebook 8460p Ubuntu 12.04 LTS (clean install, no mod, nothing... really clean... no ...
12
votes
2answers
2k views

Why does powertop still detect tunable settings on >12.04?

According to this Q&A laptop-mode-tools and powertop are not needed anymore with ubuntu 12.04 as the power savings are now included in the kernel. So I decided to remove laptop-mode-tools from ...
1
vote
3answers
3k views

System won't shut down properly, stays in the plymouth screen

I have an older computer that I got from work when we upgraded to newer ones. I don't know the brand, it's kind of a mix and matched machine, but I can get some better info if necessary. Anyway, I ...
1
vote
1answer
492 views

Can't find “/sys/devices/system/cpu/sched_mc_power_savings”

I'm currently working on Ubuntu 12.04 x64. A lot of manuals about power saving in Linux tells about using parameters /sys/devices/system/cpu/sched_mc_power_savings and ...
29
votes
1answer
19k views

Is “laptop-mode-tools” still relevant for 12.04 and the 3.x kernels?

I'm using Ubuntu 12.04 x64 and trying to choose power management software. Laptop-mode-tools have a lot of features, but the only reason why I'm worry about is that it's manual and config files are ...
14
votes
1answer
1k views

Is there ongoing work in the kernel team to improve battery life under linux?

I have read in some forums that the kernel team is working on improving battery life and energy efficiency in linux. Unfortunately our community really lags behind windows and mac in that regard. I ...
4
votes
2answers
4k views

Overheating using a i7 Intel processor while using Ubuntu

I use a Intel i7 Dell-laptop. I installed Ubuntu 12.04(64bit) from scratch. I realized the CPU temperature increased immediately(it's not difficult to detect temperature with this computer only by ...
0
votes
2answers
569 views

Screen goes blank/corrupted/garbled when pressed brightness buttons on dell inspiron 14r in 13.04

When i press brightness key little faster the screen turns black(when graphic driver is not installed) or corrupted(when ati driver is used) and i have to forcefully restart again.This happens even ...
0
votes
0answers
120 views

Will Ubuntu 12.04 kernel address the ASPM issue [duplicate]

Possible Duplicate: Will final version of 12.04 use the power management changes found in kernel 3.3 I am asking as ...
12
votes
3answers
6k views

Will final version of 12.04 use the power management changes found in kernel 3.3

I have seen in some version of Ubuntu that instead of making a huge change to update to the latest kernel, they take some of the good stuff out of it, for the sake of stability and put it on a ...
0
votes
2answers
423 views

How to install this kernel?

I have a Samsung notebook with Core i3 Sandy Bridge processor and I want to install the patched kernel available here: https://wiki.ubuntu.com/Kernel/PowerManagement What Kernel version should I ...
0
votes
1answer
444 views

Power consumption issue with Kernel?

I have aquired a Samsung notebook, model RV420 (Core i3 Sandy Bridge), acording with the specifications the battery should work for aproximatly 6 hours, but in fact his duration was 2 hours and 45 ...
5
votes
4answers
12k views

How can I prevent iwconfig power management from being turned on?

I am affected by this bug: 869502. A workaround which seems to stop the kernel panics for me is to disable wlan0 power management: sudo iwconfig wlan0 power off However it seems to automatically ...
1
vote
0answers
213 views

When is a Kernel update due for 11.10? [duplicate]

Possible Duplicate: Kernel patch that solves battery issues when for ubuntu ? Thanks to Phoronix there seems to be a fix for the power regression/overheating bug in the Linux Kernel 3.0.1 ...
9
votes
3answers
3k views

Kernel patch that solves battery issues when for ubuntu ? [closed]

http://www.phoronix.com/scan.php?page=news_item&px=MTAxNDM When will this come for ubuntu ? I am getting tired with my 11.10 dieing at little over 50 minutes of battery when at the most extreme ...
5
votes
2answers
797 views

Has the overheating and power regression been fixed in Linux Kernel 3.1? [closed]

Some laptop models running on Ubuntu 11.10 with kernel 3.0 had some massive power drainage and overheating problems. I just realized that there has been a Kernel upgrade (updated to Kernel 3.1) and ...
1
vote
1answer
143 views

Can I install the current version of Unity in an older version of Ubuntu?

Is it possible to install current version of unity of 11.10 in 10.10 as I'm fed up with the power issues of current kernel version and would like to revert back. If I revert back to previous kernel ...
0
votes
1answer
1k views

What is a realistic date for the kernel power regressions fixes?

Linux kernel has cumulated multiple power management regression bugs which make systems affected barely usable. A system that works at 30/30 temperatures on Windows during office work may work on ...
15
votes
7answers
15k views

Laptop minimal power consumption tweaks [duplicate]

I've recently installed Ubuntu 11.10 on a new Lenovo X220 laptop with a 9-cells battery. I have a trans-atlantic flight coming up, and I would like to use my laptop during it. Lenovo claims that ...
0
votes
1answer
516 views

How can I tell if I'm affected by “The 11.10 Battery Power Drain”?

I've seen hints at some kernel power bug affecting battery life if updating to 11.10 -- as for example here. I relation to this, I have three questions: How can I tell if my machine is affected ...
1
vote
2answers
2k views

Do I need to add a boot parameter to work around this kernel power bug on a Sony Vaio VPC-EH1S0E?

If i with dmesg | grep -i aspm have this: [ 0.503709] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it [ 0.673564] ACPI _OSC control for PCIe not granted, disabling ...
6
votes
1answer
976 views

Linux kernel regression on power usage

Webupd8 reported this power management fix for the 2.6.38 Linux kernel regression: Add the following to the boot grub line "pcie_aspm=force" My question - how does this suggested fix differ from ...
5
votes
1answer
464 views

Is there a bug report tracking the power regression in the 2.6.38 kernel?

I'm looking for an official bugtracker entry (either ubuntu, or kernel) which tracks the story of power usage regression described in: ...
4
votes
1answer
322 views

Why is kernel “rescheduling” causing so many wakes-from-idle?

PowerTOP reports that the majority of wakeups are being caused by [Rescheduling interrupts], [kernel scheduler], and [kernel core]. What are these, and can I do anything to reduce the number of ...