Cannot switch between graphics cards on Ubuntu - gpu

I have recently installed nvidia x server , as mentionned in many posts in order to switch between my graphic cards . However , when I launch the Nvidia X server , there is not Prime tabs allowing me to switch. In face , it's all empty . During the install , it asked me to disable Secure Boot , but I did not comply , as it had lead me to many problems in the past.
So, how can I get my GPUs to show up ?
I am dual booting with Windows 10 , maybe that information helps.

if you have nvidia x server i assume you have the drivers already.
it should come with prime by default. but you can try to install it manualy
do:
sudo apt install nvidia-prime
maybe do a reboot just to make sure.
it should appear in nvidia x server after that

Related

Need Windows to show OS on dual boot with Ubuntu

I support a group of engineers who use dual boot systems with Windows 10 and Ubuntu 18.04, each on a separate SSD. With everyone working from home, if an engineer needs Ubuntu re-installe, they will need to do it themselves. The problem is, that to do this, the person will need to determine which SSD to re-install Ubuntu upon. What I need is a way to tell, from Windows, which OS is on which SSD. I have tried:
diskpart
wmic
PowerShell
System Information
I have found ways to list the SSD and its size, but none of them shows me the OS. In Linux I know several commands to get this information very easily, but Windows has me stumped. Can someone please help me with this?
I found the solution to my problem using PowerShell. I used the following command to reveal the systems disk for Windows:
Get-Disk | Where-Object IsSystem -eq $True | fl
Output of above command
Note both the model number and the first 3 digits of the AllocatedSize.  You do not want to install upon the disk with this information.
When installing Ubuntu and are presented with a choice for which disk to install upon, you now know which one not to use. So, you can safely install on the other SSD or disk.

Ubuntu 16.04 screen completely freezes only mouse moves

Ever since I have upgraded my laptop (Click here for hardware specs.) my screen usually freezes. Mostly in chrome or Firefox browser. I am pretty sure this is a Nvidia driver problem but I can't seem to find the solution. I am running a Nvidia Quadro K2100M.
I am currently running Nvidia 361.42. I have tried using open source Xorg server without any luck.
The only solution I have found so far is forcefully turning off the computer by holding down the power button.
Things that I have tried:
I got keyboard input
I cannot switch to another terminal to restart lightdm
This problem came to me occasionally, making me really annoyed.
As illustrated in many blogs, this may be caused by graphic driver problem. For me, my desktop has a NVIDIA video card, you can run lspci | grep VGA to see what type of your video type, in my case, it returned:
02:00.0 VGA compatible controller: NVIDIA Corporation G98 [GeForce 8400 GS Rev. 2] (rev a1)
I followed the instruction on jiakai zhang's blog to reinstall proper drivers for the desktop, hope this will help you.
The key steps in [1] are to reinstall the ubuntu desktop and nvidia drivier by:
$ sudo su
$ apt-get update
$ apt-get install --reinstall ubuntu-desktop
$ apt-get install unity
$ apt-get remove --purge nvidia*
$ reboot
$ sudo apt-get install nvidia-current
$ sudo reboot
Updating the grub settings worked for me! Do the following:
1. Open the GRUB configuration
sudo vi /etc/default/grub
2. Change the value of GRUB_CMDLINE_LINUX_DEFAULT from "quiet splash" to
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=1"
and save the file.
3. Update & Reboot
sudo update-grub
sudo reboot
More info:
This is a bug in the processor, known as the c-state bug. It causes total freezes when the CPU tries to enter an unsupported sleep state. It's a problem for many Bay Trail devices especially with newer (4.*) kernels. There is a simple workaround until it gets properly fixed upstream. You just need to pass a kernel boot parameter and the random freezing stops completely. The parameter may increase battery consumption slightly, but it will give you a usable system. You do this by editing the configuration file for GRUB as described above.
GRUB - boot loader package from the GNU Project, which provides a user the choice to boot one of multiple operating systems
installed on a computer or select a specific kernel configuration available on a particular operating system's partitions;
Intel Bay Trail - new Atom Processors from Intel. Atom is Intel's family of x86 and x86-64 processors that are optimized
for small computing devices, such as smartphones and mobile Internet devices;
C-States - used to optimize optimize or reduce power consumption in idle mode (i. e. when no code is executed) - (C0 to C8)
Reference: here.
I have since fixed this problem by re-installing Ubuntu 16.04 and not switching from the nouveau video driver. I also disable updates and everything been working good for about 2 months now.
Gaming is pretty good but I usually play steam games so doesn't push any kinda hard core graphics
Well, I had the same problem: My PC was freezing randomly. I tried Ubuntu 16, 17 and 18.04 and everything was the same. I tried several drivers and didn't get a solution. I tried several solutions that I found in the forums (including this) and got bad and harmful results.
My solution was: I stopped using the graphical nvidia card, removed it and now I'm using the integrated Intel HD graphics card (Intel® HD Graphics 530 card (Skylake GT2)) and all the problems were solved!
I fixed mine using a few commands from #Qoros solution above. i just ran apt-get update, apt-get install nvidia-current, and sudo reboot. cheers to #Qoros btw!
For me, none of the approaches described in rest of the answers worked.
I was opening multiple terminal tabs running some heavy processes and ubuntu used to freeze when I had 6-7 tabs. I tried monitoring the resources used while I was starting my processes in terminal tabs. You can do it by opening System Monitor app and going to Resources tab.
What I noticed is that when my RAM(8GB) and my swap space(1GB) were completely used up, ubuntu would freeze.
As a solution, I increased my swap space and made it 16GB. After this memory never gets used completely and ubuntu doesn't freeze.
https://askubuntu.com/questions/178712/how-to-increase-swap-space decsibes how to increase swap space.

Do work from Linux

I am a programmer who likes to be on my old Linux box . I am also getting programming work which are in Apple and Windows ( and also android, and also embedded, and also cloud). Now I don't want to go into the internals of these 2 OS , but if I get work which is purely logic based and language based , say some c++ or shell scripting etc in these 2 OS then I want to do them to earn money , sitting infront of my linux box. Question is can I work on my Linux machine and deliver stuffs to my clients which will run on these 2 OS . If yes what I have to do and what software, IDE etc I have to install in my Linux machine. Do I need to install a VM ?
The Xojo RAD IDE will let you develop on Linux and create apps for OS X and Windows. But you'll really want to test on those OS's before you send anything to your clients. It's easy to run Windows in a VM on Linux, but OS X licensing requires a Mac.

Use of Hyper Visor to run the Windows Phone Emulator

I am really new to Windows Phone 8 App development. I would be grateful to you if you can answer my question. I have a machine with Intel(R) Core(TM) i3 processor and when checked I found out that my virtualization setting enabled.
I installed Windows Pro 8.1 in to my machine and then it indicates that my Hyper Visor is default switched off and I had to run it. But when I run it after making some of the changes by restarting the machine, suddenly for some unknown reason it undoes every change made finally leaving the machine with no Hyper Visor running.
I come across the same process when I am to run the Windows Phone emulator to test Windows Phone 8 Apps.
I hope my issue is clear to you all, can someone help me to fix this issue or tell me the exact reason behind this?
I would look at my Windows Event log and see if you perhaps there's a problem with Hyper-V being incompatible with a driver or something like that. It may be failing to reboot and the doing a system restore to get the machine back to a bootable state (by rolling back Hyper-V). I've had problems with Hyper-V and my HP laptop's blue tooth drivers:
Here's the thread where I found out about that:
HP Bluetooth / Hyper-V woes
Updating the driver to the newest version on HP's site fixed my computer for a while, but then I had problems with Windows Update hosing my machine with an update to the Bluetooth driver.
I seem to have fixed it for good by going to RA Link's website and downloading a version of the driver that's newer than the one on HP's website. I'm not at my personal computer right now, but if you'd like I can see if I can find the driver version that seems to have fixed my Bluetooth/hyper-v problems for good.
-Eric

Emulator cannot run because of Hyper-V Error

I have this error message:
The windows phone emulator requires Hyper-V. Your PC is missing the
following pre-requisites required to run Hyper-V:
I cannot run my project on windows 8 phone emulator since days. I searched on internet, still I couldn't solve my problem. Everyone says open Control-panel, then click turn-off or turn on windows features, then choose hyper-v option. When I clicked turn off or turn on windows features there is no option about Hyper-V. Can anyone help me?
My computer features:
windows-8 Professional (64Bit)
intel core i7 processor
8Gb ram
First step
1- turn on hyper-v from bios
read this :
http://blogs.technet.com/b/canitpro/archive/2014/03/11/step-by-step-enabling-hyper-v-for-use-on-windows-8-1.aspx
2- turn on hyper-v from windows
At the Start Screen, swipe the right hand side of the screen and select the Search Charm.
Type turn windows features on or off and select that item.
Select and enable Hyper-V.
If Hyper-V was not previously enabled, reboot the machine to apply the change.
I formatted my os from windows 8 pro to windows 8 enterprise and I solved my problem easily.I know it is not a logic solution but it worked.
In order to run Windows Phone 8 emulator you need to enable Hyper-V technology in the BIOS of your PC. See the detailed article on how to do this.
First you must turn on hyper-v from bios and then turn hyper-v from windows featured list restart and then will work ..