Questions related to the the Graphics Processing Unit itself. Questions about graphics cards can be found at [tag:graphics].

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Dual GPUs slower than single one, in Ubuntu 14.04

I have two GTX Titan Z gpus. However, I found that if I plugin both of them to my computer, the Ubuntu system runs much much slower than only plugin only one card. I am wondering whether there needs ...
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0answers
18 views

How do I assign differnt number of cores/threads to an user group

I have a server machine having two GPU (512 cuda cores each) and Dual Quad Core Processors having 16 Number of Threads. The system is using Ubuntu Desktop edition 14.04. I want to assign an user-...
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0answers
862 views

New USB-C / Thunderbolt C features

A lot of new systems are going to be coming out with USB-C / Thunderbolt which allows you to use pci-e bus over it. Specifically using an external GPU over USB-C, for example the Razer Blade Stealth /...
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0answers
156 views

Does compiz use hardware acceleration by default?

How do I find out if Compiz is using my graphics card? If it's disabled how do I enable it?
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0answers
62 views

Why is my screen choppy when I play HD videos?

I am using Xubuntu 14.04 on an ASUS X55V(i3 CPU and Nvidia 610m GPU). I installed the recommended proprietary driven in the GUI (352.63). I installed Nvidia Settings, too, and it lets me choose if I ...
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0answers
187 views

Fix GPU-manager/Graphics card related error

On running the follwing command I get the following output: user@Enigma:~$ sudo systemctl status gpu-manager.service ● gpu-manager.service - Detect the available GPUs and deal with any system ...
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1answer
125 views

Problem with Ubuntu installation - Black Screen [duplicate]

I have a problem with the installation of Ubuntu on my new desktop. I'm trying to install it from a USB and when I select try ubuntu or install ubuntu. I get to see the ubuntu loading screen, the main ...
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1answer
69 views

Screen Tearing Nvidia GT640m

I want to use my Nvidia card on my computer rather than intel hd4000. However it has a outstanding amount of tearing both vertical and horizontal, even there is god damn triangles appearing in video ...
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0answers
54 views

Ubuntu not compatible with my custom built desktop

I custom built a desktop PC today, and I'd like to run ubuntu 15.10 on it. It boots up, then right when I start to see unity desktop, I get a white, unresponsive screen (no mouse showing or anything). ...
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0answers
75 views

Changing Shared Memory in Ubuntu

So I just received my i7-4790k and installed it into a MSI z97 Gaming 5 motherboard. However, the shared memory is restricted to 512MB, and it seems to be possible to increase the amount in Windows, ...
4
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1answer
466 views

Ubuntu: Switch from Nvidia to Intel graphics?

By default Ubuntu has selected the nouveau drivers as i have an nvidia gpu. But I need to run my system on the Intel GPU instead, with Intel drivers etc. How can I do this?
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0answers
213 views

How can I update the driver for my Sapphire Nitro 4Gb R9 380x GPU?

I just built my first computer from scratch and updating drivers on Ubuntu is not as simple as Windows. I've installed Wine in an attempt to run the .exe off the product website to update the driver ...
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1answer
929 views

Unable to install NVidia Driver 352

I have a HP Envy 15-ae009tx laptop. Ubuntu 14.04 OS i7-5500U processor NVidia GeForce GTX 950M I tried using sudo apt-get install nvidia-352 352-updates. On reboot, the screen shows dots in the ...
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0answers
35 views

Possible override for black screen after changing the gpu?

I recently installed Ubuntu as I need to learn Fortran. Meanwhile I bought new GPU - r7 370. When I installed it into motherboard and started Ubuntu I was greeted with black screen, I think that ...
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1answer
468 views

AMD Crimson Driver 14.04 LTS Installation

I new to Linux and still learning how to use it.I have a R290 GPU and I need help in installing the new Crimson Drivers from AMD. I there a step by step guide in installing the drivers? I've been ...
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0answers
26 views

Find GPU resource allocation on virtual server

I have been provided a virtual server, which runs Ubuntu 14.04. I'm accessing it using PuTTY. The server should have a NVIDIA GRID K2 GPU, but I'm having some issues using it in Python/C++ with the ...
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0answers
249 views

Multi monitor setup with Intel iGPU and dedicated NVIDIA card (desktop)

So I haven't found any post with a clear answer to this question. Is it possible to run both the HD4000 graphics on a 3770K and a GTX 980TI at the same time? I'm primarily a Windows user trying to ...
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0answers
97 views

Install CUDA 6.5 on Trusty Tahr without upgrading to `nvidia-352`

I am trying to install CUDA 6.5 on Trusty Tahr 14.04.3 using sudo dpkg -i cuda-repo-ubuntu1404_6.5-14_amd64.deb sudo apt-get update sudo apt-get install cuda-6-5 Unfortunately, the nvidia-352 ...
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0answers
63 views

2 GPUs: 1 for monitor 1 for CUDA

I have 2 GPUs (NVIDIA QUADRO 600 and QUADRO 2000) on a Ubuntu 15.10, I am trying to set up the system so I can use the Q2000 for CUDA code while the Q600 takes care of the monitor. However I am only ...
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0answers
61 views

Google chrome consumes too much Vram

Recently I enabled chrome gup acceleration. ...generally I'm a really heavy google chrome user. I open up a really huge number of tabs. Now Google Chrome consumes my vram and I experience drastic ...
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0answers
91 views

Ubuntu, How to Enable Forced GPU on HP Pavilion

I recently installed Ubuntu MATE on an HP Pavilion dv6 (XG759UA#ABA) to be a dedicated Minecraft machine. MATE works perfectly, but Minecraft insists upon using integrated graphics instead of the GPU. ...
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0answers
24 views

Is a flickery screen bad?

I am running 14.04 with the 4.3 kernel (recently updated due to driver issues) and I've noticed a lot of flickery screen things going on. Usually when I scroll or when things update quickly I get a ...
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1answer
116 views

Blender GPU rendering works from command line but not in crontab [duplicate]

I would like to schedule blender renderings with GPU support. I have created a bash file rendering.sh to do the job. I have scheduled it with sudo crontab -e. * * * * * sleep 0 ; sudo /Home3DHome/...
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0answers
120 views

How to control a Case Fan-header according to video card tempreatures?

I have a free 4-pin Case Fan-header on my motherboard and I want to add additional cooling for my video card. There is a free space for a case fan in local proximity to the PCIe-slots, which I would ...
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1answer
162 views

Ubuntu 15.10 driver AMD A10-5750M

I opened additional drivers section and I can see that I have something that I don't understand. Can you help me what would you select if you have CPU AMD A10-5750M with built in graphic card. I am ...
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0answers
44 views

GPU information location

I am trying to find out how to add information to GPU information output. I use this command: lspci | grep VGA to get the GPU info. Where does this command pull its information from? I want to edit ...
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0answers
202 views

Screen tearing in videos on Ubuntu 15.04 with Nvidia GeForce GT 630M

My Ubuntu 15.04 shows a lot of Screen Tearing during vídeo, mainly when is in HTML5, and I already have tried the "TearFree" command for the GPU but with no results, I hope get the right fix for this ...
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4answers
903 views

How to know the manufacturer of a graphic card?

I recently discovered, in a brief discussion with kos, that Nvidia does not produce its own graphic cards (apart from Quadro series), but other manufacturers are producing and selling them (Zotac, ...
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0answers
108 views

How to use GPU for OpenCL from command line remote login

I use OpenCL accelerated math on my workstation which I can only access remotely via command line from Windows. I have no desire to have a VNC desktop or tunnel X through ssh. When I am not logged in ...
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1answer
184 views

Ubuntu 15.04 with GPU tesla k20 and GT610 Graphics card

Can anyone tell me how to get drivers for these GPU and Graphics card?
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1answer
61 views

14.04 - Power button that shows usage of external graphics card is always on

I have selected NVIDIA binary driver version 346.96 from the additional drivers - as it is shown below. But the power button that shows that usage of external graphics card is always on. Does it mean ...
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0answers
52 views

Login loop after removing dedicated gpu

I'm dual booting windows 10 and Ubuntu 14.04 LTS, and I have a gtx760 with the proprietary drivers installed in Ubuntu. The problem is when I remove the dedicated gpu and try to login with the intel ...
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1answer
104 views

Black Screen With Loading Circle on Boot [DEAD]

I recently updated my graphics driver to a newer one available on AMD's website, but it was beta and it broke stuff. Initially when I booted it would give me the message that X failed to load. Then I ...
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1answer
122 views

Can I have the portability of a LiveUSB with the performance of a USB install?

In particular I would like to have a dynamically installed GPU driver based on the target system. NVIDIA, AMD, or Intel. So I know I can make a persistent LiveUSB whereby there would be anywhere up ...
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2answers
609 views

Radeon Driver Help!

So after 3 days of trying to figure out why my computer wasn't letting me boot off anything other than windows, I figured out why. My Graphics Card wasn't letting me. I took it out and it let me ...
0
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1answer
418 views

Hybrid intel-nvidia card on 14.04 [duplicate]

I recently installed Ubuntu 14.04 on my old dell Vostro 3500 laptop. The laptop has a hybrid intel/nvidia 310M GPU. Bublebee doesn't seem to work and installing the nvidia drivers (versions 319+) ...
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1answer
142 views

PCI GPUs have the same device ids. Why?

I've got two R9 280's installed in my system. In Ubuntu when I run lspci -nn both the cards have the same device id. Example Output: 01:00.0 Example GPU 1 [8080:aa68] 04:00.0 Example GPU 2 [8080:...
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1answer
382 views

Upgrading to newest nVidia drivers on a laptop that uses Optimus? (Ubuntu 15.04)

I'm running Ubuntu 15.04 on a laptop with an Intel HD Graphics 5000 and a nVidia GeForce 520M, joined by an Optimus. I'm trying to upgrade my graphics drivers to the latest provided by the vendor so ...
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0answers
264 views

Ubuntu 15.04 freezes when using airodump-ng

System freezes when using airodump-ng . Screen i frozen and keyborad/mouse are unresponsive. All I can do i push the power button. I think it's problem with WiFi card, but maybe prob with GPU too(...
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2answers
196 views

How to toggle easily between the AMD Catalyst driver and the open-source Radeon driver?

I've got an AMD Radeon R9 270X that works very well with the open-source Radeon driver. However, I am going to occasionally be using an OpenCL application that requires the proprietary Catalyst ...
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0answers
257 views

Nvidia driver causing login loop

I have a Lenovo y50 with an integrated GPU as well as an Nvidia 860m. Lspci says that I am using the integrated card but it uses the Nvidia for 3D. Looking at other threads I have tried to install ...
4
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1answer
12k views

Ubuntu 14.04: nvidia drivers for GeForce GTX 960M

I have Ubuntu 14.04 installed on an Asus N551JW laptop with these two graphic cards: Integrated Intel® HD Graphics 4600 NVIDIA® GeForce® GTX 960M 4G GDDR5 By default, Ubuntu recognizes the Intel ...
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0answers
33 views

Having issues with pci-stubs

So I am trying to pass through my GPU to a VM and I'm having issues. I have a GT 8800 for my Ubuntu monitor and an AMD 290 set as a pci-stub. My Nvidia monitor works fine when the 290 isn't stubbed, ...
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2answers
295 views

Theres red lines on my screen

Ever since I got this video card (Gigabyte GTX 750 Ti), its had red lines all over the screen as is it was repeating exclamation points or semicolons. even after I added the driver it seemed fixed ...
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2answers
2k views

Reason to keep a GPU in a computer that is running Ubuntu Server

After a problem with my old motherboard, I'm switching my Ubuntu to my gaming computer. My main question is: is there any reason to keep my AMD HD 7850 running on this computer? My motherboard has ...
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1answer
635 views

How to install GPU Ocelot in Ubuntu 14.04?

I'm using Ubuntu 14.04 and I wish to install GPU Ocelot (an open-source dynamic JIT compilation framework for GPU compute applications) in it. I have searched for suitable Ocelot versions but I could ...
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1answer
857 views

Can I enable crossfire on Ubuntu 14.04?

How can I enable crossfire mode on Ubuntu 14? Graphics: 2 x AMD Radeon HD7790. Mainboard ASUS P5KC. OS: KUbuntu 14.04 x64. aticonfig reports: aticonfig --lscs Candidate Combination: ...
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1answer
261 views

Blender 2.75a has massive lag

I'm running Blender 2.75a Game Engine on Ubuntu 14.04. My system specs are: 4GB RAM Intel Core 2 Duo Nvidia Geforce 210 Once I select the Texture mode the program begins to lag hugely, taking ...
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0answers
4k views

Dota 2 Reborn: Optimize fps?

Radeon 7950 GPU, driver=fglrx_pci . The dota 2 reborn source 2 mode greatly increased my fps(from 20-30 in source to 40-60 in source 2). It seems playable now, but I'd like it to be 60 stable. What ...
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0answers
204 views

Gtx 970 can't boot Ubuntu 15.04. Failed to start /etc/rc.local.compatibility

I recently installed a 970 before I was using integrated graphics. My system is dual booted win 10 and Ubuntu 15.04. I installed the most recent driver, and plugged in the gpu. It starts to boot in a ...