On Thu, May 28, 2015 at 9:26 AM, M. Fioretti <mfioretti(a)nexaima.net> wrote:
Greetings,
I have come across a computer running Fedora 20 X86_64 that is
basically unusable. I would really appreciate your help to:
1) figure out and fix the current problem (including: would
installing fedora 22 help or make things worse because of
dropped support for some hw component, etc?)
2) even more important: help me define a general, systematic procedure
to investigate what exactly causes certain problems on Fedora and Linux
in general, in all
cases like this. I ask because I just realized that I am not
up to date anymore on this particular topic, and it is a general
interset question, isn't it?
Now the facts: that computer has a dual core CPU and 8GB of RAM, but it
is so slow that when I open any terminal in X, under any window/desktop
manager, if I write a long command at the prompt, then realize I made a typo
10 characters before the cursor, and hit backspace, it takes 2/3 seconds
to go back to that point.
If I open libre office or ANY OTHER text editor, and move the trackball to
select a sentence,
it takes seconds to see it highlighted. If I then click on another part of
the file
to paste the text there, it is another 2 seconds to see the cursor blink in
that new
position. Ditto for scrolling, in ANY program that supports it: press
PageDown, wait seconds
to see the corresponding text.
My **feeling** is that there is some biiig misconfiguration at the graphic
driver level,
but it's just a feeling. As I said, besides fixing THIS computer, I really
want to refresh all my knowledge on how to investigate properly any case
like this.
Outputs of lspci, /proc information are below. If I need to run other tests,
just ask.
Any feedback is welcome, thanks in advance,
Marco
Most likely you're using software acceleration (due to poorly
supported [by F20] graphics card) with a heavy desktop environment
(E.g. GNOME 3).
As F20 is nearing end of life (~4 weeks), so I wouldn't waste time
trying to fix it.
I suggest you download the XFCE live CD (or USB), play around with it,
see if things look better.
If it does, install F22 with XFCE, and slowly test the different
desktop environments (XFCE, GNOME 3, KDE 5, etc) and see what works
best.
If it doesn't, file a bug report with the complete system
configuration; I'd also add the output of glxinfo.
- Gilboa