Sep 5 10:27:38 yash20-desktop kernel: audit_printk_skb: 42 callbacks suppressed Sep 5 10:27:19 yash20-desktop kernel: init: plymouth-upstart-bridge main process ended, respawning I tried to give tail -f /var/log/syslog its showing the following errors how to fix this? tail -f /var/log/syslog Using command modeprobe cdc_acm its displaying the driver. In my PC when i'm giving lsmod its not showing the cdc_acm driver but i tried to install again it's showing driver is already there. Can you help me with proper command or method? I use Fedora as host, so I’m not sure which other packages Ubuntu might have.I'm trying to install drivers for RS-232. In many cases the login loop you describe is because of the Nouveau driver being loaded…even if it doesn’t seem like it from some initial configuration, an initrd ramdisk might be putting this in place. In theory installing this through the package manager would take care of this, but some methods of packaging forget this. What kind of package or install method are you using? You may need to add something like “rd.blacklist=nouveau” to the kernel command line in addition to other methods of banning Nouveau. #Jue301 driver download ubuntu 14.04 install

You might want to drop into the grub command line before it boots (I think ‘e’ then exit with control-x when selecting the boot entry you want to edit) and go to text mode only via appending “systemd.unit=multi-user.target” to the Linux line (usually it starts with something like “linux16” and is a very long line which will line wrap, but keep it as a single line and just append to the end)…this should get you to text mode so you can manually try “systemctl isolate graphical.target”, and if this fails, you’ll go back to text mode. “lsmod” and “cat /proc/cmdline” will probably give some information.

Also “dmesg | grep -i ‘(nvidia|nouveau)’”.

I haven’t seen the demo, and packages for NVIDIA video drivers are better supported under x86_64 Ubuntu versus Fedora, so some of what I know will differ slightly.

#Jue301 driver download ubuntu 14.04 install.