My computer is dell xps 8700 , nvidia 745 gtx, intel core 7. I tried to install ubuntu willy werewolf on my desktop but it didn't work. The graphic look horrible. words aren't showing correctly. some letters are missing. I tried one month ago ubuntu 15.04 This version worked correctly. and it's 14.04 work correctly too.Please help. Your sincerely Agnieszka
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I have the same hardware (xps 8700 with nvidia 745 gtx) and I confirm the problems: graphic looks horrible, words aren't showing correctly, some letters are missing. Moreover, login window (never seen in ubuntu live!) goes blank and then returns to the login screen again in a never ending loop when you try to access.
I can also confirm, with 15.04 all is fine (nouveau). I'm still investigating the problem. If you create a USB live with persistent capability (see How to create UEFI-only bootable USB live media?) passing 'nomodeset' argument to the kernel when booting (press 'e' on grub and insert 'nomodeset' before 'quiet' argument), you will able to run 15.10 in a low resolution and login window will disappear!
With this configuration, you can try to update ubuntu (apt-get update; apt-get upgrade) or to install nvidia driver since live session uses noveau as default. These systems have failed on my Dell so I think it is a bug related to the new kernel 4.2 (see also this post: http://ubuntuforums.org/showthread.php?t=2300068). Since live usb with persistency can't update the kernel, in the next week I will try to install Ubuntu on a removable device to try to find out the actual problem. Another way is to update 15.10 iso with a new kernel. Wait and see.
Update: a fresh install with 4.2.0-19-generic works fine using nvidia driver 352.63. As stated above, pass nomodeset argument to the kernel, update and upgrade ubuntu, and then enable the proprietary nvidia driver.
