Anthony O.'s questions

I'm trying to boot an Ubuntu 14.04.1 LTS USB stick, and it seems it will never enter the Desktop.

I'm stuck on the bootscreen, and here are the lines when I press "ESC" :

stdin: Not a typewriter
umount: can't umount /cdrom: Device or resource busy
/init: line 7: can't open /dev/sr0: No medium found
stdin: Not a typewriter
/init: line 7: can't open /dev/sr0: No medium found
stdin: Not a typewriter
umount: can't umount /cdrom: Device or resource busy
/init: line 7: can't open /dev/sr0: No medium found
stdin: Not a typewriter
/init: line 7: can't open /dev/sr0: No medium found
stdin: Not a typewriter
umount: can't umount /cdrom: Device or resource busy
/init: line 7: can't open /dev/sr0: No medium found
Generating locales...
  fr_FR.UTF-8... done
Generation complete.
pwconv: failed to change the mode of /etc/passwd- to 0600
Using CD-ROM mount point /cdrom
Identifying... [d0f03a23b18ebd55964c351e853c5b6f-2]
Scanning disc for index files...
stdin: Not a typewriter
stdin: Not a typewriter
stdin: Not a typewriter
stdin: Not a typewriter
umount: can't umount /cdrom: Device or resource busy
/init: line 7: can't open /dev/sr0: No medium found
stdin: Not a typewriter
/init: line 7: can't open /dev/sr0: No medium found
stdin: Not a typewriter
umount: can't umount /cdrom: Device or resource busy
/init: line 7: can't open /dev/sr0: No medium found
stdin: Not a typewriter
/init: line 7: can't open /dev/sr0: No medium found
stdin: Not a typewriter
umount: can't umount /cdrom: Device or resource busy
/init: line 7: can't open /dev/sr0: No medium found
Generating locales...
  fr_FR.UTF-8... done
Generation complete.
pwconv: failed to change the mode of /etc/passwd- to 0600
Using CD-ROM mount point /cdrom
Identifying... [d0f03a23b18ebd55964c351e853c5b6f-2]
Scanning disc for index files...

It blocks a long while on "Scanning disc for index files...", then writes all the following and re-blocks on next Scanning disc for index files....

I used the usb-creator-gtk program to build my USB stick, with persistent data enabled.

As somebody seemed to have the same problem (http://www.reddit.com/r/linuxquestions/comments/2dsgd5/cant_boot_from_cdusb_to_install_ubuntu/) I tried the solution from there (adding nomodeset), but I still have the same results: blocked at the bootscreen (not really hanged because the little dots are still "alive")...

Does somebody have an idea what happens ?

I'm using Ubuntu 12.04.3 with NVidia drivers (319) for my Quadro K2100M graphic card, and when I switch my main 3200x1800 laptop screen to mode 1920x1080 (using nvidia-settings), the display goes blurry...

I am using two screens:

• My main screen is a LCD with max resolution 1920x1200.
• My laptop screen (original resolution 3200x1800) is sitting to the right of that.

The main problem is that, on Ubuntu, the font is far too small on my laptop screen. Because of that, I wanted to change the resolution of my laptop to 1920x1080.

Reading Galgalesh's answer, I tried to compute my DPI and here is the DPI configuration which I should have:

• 94x94 for my main LCD screen 1920x1200
• 235x236 for my 3200x1800 laptop screen

Is there a way to have dual DPI resolutions with an extended desktop?

I'm trying to install Ubuntu 12.04.3 LTS on my new Dell Precision M4800 (from a USB key, made from Ubuntu) and I've got that problem : after choosing my language on the boot screen, I can see no more things on my screen, it keeps black...

The graphic card is an NVidia Quadro K2100M...

I tried to boot with an Ubuntu 12.04.1 install USB key, and I had something on the screen but my ethernet card wasn't detected (the wifi was OK)...