I've just started using Ubuntu (or any Linux distro, for that matter). I just bought this computer (), and I've installed the latest Canonical LTS version of Ubuntu (20.04). My battery life is, quite frankly, abysmal. I was told the battery should be lasting 7-8 hours, but it's barely lasting 3. I assumed it might be a driver issue with the NVIDIA GPU, and, as per the instructions , I examined the &quot;Additional Drivers&quot; tab, where I saw that the &quot;Using NVIDIA driver metapackage from nvidia-driver-440 (proprietary, tested)&quot; radio button was already selected:  So now I'm at a bit of a loss as to what's going on. Again, I'm new to Ubuntu and to Linux, even though I do have some rudimentary knowledge of the command line--does anyone have any recommendations of next-step diagnostics?
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This question is present as a matter of historical interest.  While you are encouraged to help maintain its answers, please understand that "big list" questions are not generally allowed on Ask Ubuntu and will be closed per the .   It is possible to greatly extend the usage time of a laptop or netbook running on battery by disabling various services and installing various packages.   What tricks or tips do people have for getting an extra hour or two out of their batteries?
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Last year I purchased a Dell Inspiron 5315 laptop shipping with Windows 7 preinstalled. I installed Ubuntu 10.10 alongside it with dual-booting. On upgrading to Ubuntu 11.10, I was upset to find I now get less than one hour of battery life! Windows 7 gives me 2.5 hours of running time.  Is there any possible explanation why  my battery is running out faster with Ubuntu? Can anybody tell me better power options?
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What do I need to write device drivers on Ubuntu? Do I need source code for Linux? What else is needed?
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I installed Ubuntu 14.04 on my Lenovo IdeaPad Y510P today. Everything worked fine, but after installing my graphics card driver the background became pixelated (Nvidia GeForce GT755m). I downloaded the driver through Additional Drivers and selected Version 331.113 (Proprietary, tested). It was using Nouveau before.  When I apply Nouveau it becomes clean again, but it is much weaker when I open games, it gives me very low FPS even in Counter-Strike. With Nvidia driver FPS and everything else seems fine, except things look pixelated and when I minimize windows and maximize again, the window goes black.    I attempted to solve the problem myself by removing the old Nvidia driver and manually installing the latest version, but it did not help.  Please let me know if you need more details.
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Unity won't run on my new Ubuntu 11.04 install (with a Nvidia GeForce GO 7400). Ubuntu classic desktop works though, I tried all different drivers provided in the repositories.   Doing System → Administration → Additional Drivers gives me a warning :      This driver is activated but not currently in use.   I even tried the Nvidia driver from the official Homepage.  After some googling, I found the tool /usr/lib/nux/unity_support_test -p which tells me that my card is blacklisted. The other tests show a green yes.  Is this a bug? Or is my card too old which would be pretty surprising for me :P ?  Thanks.
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I have recently noticed that there is an additional driver called Unknown: Unknown here which was not there before:    I have already read , and understand why it is there, but my question is, should I activate it? Will this make a difference? Or should I just leave it as it is as it sounds rather useful?    OS Information:  Description:    Ubuntu 15.04 Release:    15.04
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Today I have updated to Ubuntu 13.10 and got mouse power status.  But I didn't need it. And also Ubuntu doesn't know how long the mouse will work and shows   an ugly "estimating...".  How do you show only the battery status?
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I recently installed the proprietary Intel drivers for my Toshiba Satellite A105 s4284 running Ubuntu 14.10. Nouveau was working just fine, I was just attempting to make it so that I was able to run CS:S (no need for explanation on that.)  Long story short, I went and downloaded the Intel Graphic Drivers for Linux* from . After downloading and installing the .deb, I ran intel-linux-graphics-installer which opened up a window that downloaded &amp; installed the open Intel drivers. I then rebooted, and it's slow. Very slow, especially on 3D effects and when I hit Alt+Tab.  Now, I don't know if the previously installed Nouveau drivers are conflicting with these new Intel drivers (if that's the issue, what should I do about fixing it?) What I do know is that my system isn't behaving right and I want it to (obviously.) If removing the Nouveau drivers isn't the solution, how can I safely remove the just-installed Intel drivers?  Does anyone have any suggestions?
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This is the third reinstall of Ubuntu 14.04 I have done today.  I just bought a laptop with an Core i3 processor and an Nvidia GeForce GT 840M graphics card.  I have installed the Nvidia driver using their .run file, and also following tutorials, and it just doesn't work. When I check in the terminal which GPU I am using it says "i915" instead of "nvidia".
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I have installed Ubuntu GNOME 15.10. I installed the nvidia tested proprietary driver and then I restarted. Afterr that I selected as primary GPU the Intel driver for normal use. However, when I enter a steam game(Portal) the graphics is bad so In order to play normal I have to switch manually to the nvidia driver again and reboot again. After the game I have to manually select as primary driver the Intel one and reboot again. It is so boring. QUESTION: How to automatically switch gpu graphics driver when I enter a game or something that needs more GPU?
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I recently installed Ubuntu 11.10 on my Mac Book Pro 7,1. I installed the NVIDIA driver (285). The brightness keys are working (F1 and F2) and I get the box showing the brightness but it does nothing. I can change the brightness in the NVIDIA X Server Settings application. How can I get the brightness working without uninstalling the driver? Thanks in advance.
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is it possible to set different blank screen timeouts in Ubuntu 18.04 with Gnome when on battery or ac? The power settings menu provides only one field which is applied always, no matter of the current mode.  This question was already asked for the Unity desktop a while ago () and they did not find a solution but I had the hope that that might have changed with Gnome now.
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EDIT:  I have added a new answer below for Ubuntu 20.04 LTS and CUDA 11.1.1.  See below.  I have a system with a NVIDIA card that has a compute support of 3.5+ compared on .  How do I install CUDA and the NVIDIA drivers in Ubuntu without downloading the .deb files from NVIDIA?
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I'm running Ubuntu 20.04 on an ASUS X99-E-10G WS w/ an NVIDIA 1080Ti and an LG 4k 32&quot; monitor which persistently gets recognized as 27&quot;. When I log in, the text of certain UI elements is ~2x the normal size. After I go to settings/universal access and turn large text on and then off again, everything is the normal size I expect. Screenshot after logging in  After turning &quot;large text&quot; on  After turning &quot;large text&quot; off  How do I get the conditions I have after cycling the &quot;large text&quot; feature to be present immediately after booting? I have the 440 version of NVIDIA's drivers installed.
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I just installed Ubuntu 17.10 (with GNOME 3) on my new HP laptop, and I noticed that the screen does not dim when the charger is unplugged.   Is there a way to set up two brightness profiles, one for AC adapter, and one for battery?   Most of the tutorials say to install tlp, but from what I notice it does not change the brightness level... it seems to increase the battery life though.
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My Lenovo Z570 has two GPU's, nVidia and Intell. Brightness control has no effect what so ever over the screen brightness, and because I've had some major issues in the past when I was trying to fiddle with nVidia drivers and settings, and I wanna be cautious now. I haven't find similar questions referring 14.04 LTS with similar configuration as mine.   I've read that it could be fixed by adding/changing content in xorg.conf but when I run  sudo gedit /etc/X11/xorg.conf   the file comes out to be absolutely empty. What do I need to do, what do I need to add to it and not get my laptop screwed with a black screen again?
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I have a NVIDIA GEFORCE GTX 1060 graphics card - how do I have to install the NVIDIA drivers properly in Ubuntu 17.10? Is it the same procedure as in 17.04 or does the fact that Ubuntu 17.10 uses the Wayland session by default change something?