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Sluggish PC on Ubuntu

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okidor Posted messages 188 Status Member -  
okidor Posted messages 188 Status Member -
Hello, following a problem on a secondary PC, I decided to switch to Linux. Strangely, my PC is massively slowing down since then. Before, the OS was Windows XP and everything was fine. My specs in broad strokes are: 524 MB of RAM and a 25 GB hard drive. I read on the web that it was enough to browse quietly; is there a problem or is it normal? Thanks in advance 
Configuration: Windows Vista Firefox 3.0.11

29 answers

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Answer 1 / 29
Anonymous user
 
You open the system monitor
System/Administration/System Monitor
then Processes
and see which program uses the most memory and CPU time.
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Answer 2 / 29
okidor Posted messages 188 Status Member 12
 
Hello, so to disable compiz-fusion, is it like this: right-click on the desktop, change the desktop background and check "none"?
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Answer 3 / 29
Anonymous user
 
Here is some documentation that could help you:

http://doc.ubuntu-fr.org/amd-ati?redirect=1
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Answer 4 / 29
Anonymous user
 
No, that’s not normal, 512 MB of RAM should be enough, even for 3D (Compiz Fusion).
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Answer 5 / 29
okidor Posted messages 188 Status Member 12
 
okay, that's exactly what I thought, do you have a little idea about the origin of the problem?
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Answer 6 / 29
okidor Posted messages 188 Status Member 12
 
I see memory but not CPU time, is it in the same table?
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Answer 7 / 29
okidor Posted messages 188 Status Member 12
 
gnome-system-monitor 10.8 MB, I’m putting that one, it’s the only one that was “in progress”
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Answer 8 / 29
Anonymous user
 
It's not much on my end; Firefox takes 67 MB and my PC doesn't lag.
Have you tried disabling Compiz Fusion?
Otherwise, it surely comes from your Internet connection.
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Answer 9 / 29
ben13010 Posted messages 3369 Status Contributor 387
 
Did you install the drivers for your graphics card?
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Answer 10 / 29
okidor Posted messages 188 Status Member 12
 
hello ben13010,

no I have not installed a graphics card driver, and I have no idea which driver I should look for, how can I know the model of my card to find the right one? thanks in advance
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Answer 11 / 29
ben13010 Posted messages 3369 Status Contributor 387
 
in system / administration / device drivers
is a driver offered?
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Answer 12 / 29
okidor Posted messages 188 Status Member 12
 
re,

no, I get the message "no priority driver is in use on this system"
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Answer 13 / 29
ben13010 Posted messages 3369 Status Contributor 387
 
Do you have an Intel graphics card?
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Answer 14 / 29
okidor Posted messages 188 Status Member 12
 
No I don’t think so, according to the following manipulation (lspci -v) in the command line, it would be a Radeon RV250 if [Radeon9000]
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Answer 15 / 29
okidor Posted messages 188 Status Member 12
 
Okay, so if I understood correctly, it's better to put a priority driver, right? but I can't because no driver is offered to me, or should I do it manually?
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Answer 16 / 29
ben13010 Posted messages 3369 Status Contributor 387
 
glxinfo | grep "direct rendering"
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Answer 17 / 29
okidor Posted messages 188 Status Member 12
 
it shows me: direct rendering: yes
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Answer 18 / 29
ben13010 Posted messages 3369 Status Contributor 387
 
Well then you have 3D enabled, that's good

Install a 3D game like Chromium b.s.u
it's in the repositories, you can install it with synaptic

and tell us if it's smooth
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Answer 19 / 29
okidor Posted messages 188 Status Member 12
 
It's good, I installed it and the game runs perfectly smoothly.
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Answer 20 / 29
ben13010 Posted messages 3369 Status Contributor 387
 
Okay, well the drivers for your card are good then.
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