View Full Version : [ubuntu] 12.10 very slow and freezes, fan is very loud

January 21st, 2013, 09:30 PM
I'm a bit new to Ubuntu. I installed 12.10 64 bit on a custom built desktop, but it runs very slow and often freezes or something like Unity will crash. I'm not sure what the issue is. I tried installing AMD drivers (I'm using an AMD Radeon HD 7850 graphics card) but when I restart the computer afterwards Unity doesn't load. Only the wallpaper and the cursor appear and I can't fix it unless I reinstall Ubuntu.

Also my CPU fan is very loud. When I boot into Windows, the fan quiets down to a tolerable speed but with Ubuntu it never does and in fact it gets louder after a few minutes.

This is the output for sudo lshw -C display; lsb_release -a; uname -a:

*-display UNCLAIMED
description: VGA compatible controller
product: PITCAIRN PRO [Radeon HD 7800 Series]
vendor: Advanced Micro Devices [AMD] nee ATI
physical id: 0
bus info: pci@0000:05:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list
configuration: latency=0
resources: memory:d0000000-dfffffff memory:fe9c0000-fe9fffff ioport:e000(size=256) memory:fe9a0000-fe9bffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.10
Release: 12.10
Codename: quantal
Linux home 3.5.0-21-generic #32-Ubuntu SMP Tue Dec 11 18:51:59 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

January 22nd, 2013, 01:36 AM
What are the specs of the rest of the computer? Does Windows seem much faster compared to ubuntu?

EDIT: Have you at least confirmed it is the graphics card that's causing the issue? if not I would suggest disconnecting the graphics card and see what ubuntu is like when using the onboard motherboard graphics instead.