Take the 2-minute tour ×
Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems.. It's 100% free, no registration required.

I followed the steps at the link below to remove the proprietary driver and install the Radeon open source driver.

RadeonDriver - Community Ubuntu Documentation
https://help.ubuntu.com/community/RadeonDriver

However, now I notice that when I'm editing text (such as in this website) if I delete lines a few adjacent lines may completely disappear until I scroll or edit again. This bothers me enough that I need to make a change. Should I go back to the proprietary driver?

I'm running Kubuntu 12.04 with a Radeon HD 6750 card and 3 monitors (one at 2560x1600 resolution and the other 2 at 1920 x 1200). Maybe that is too much for the open source driver?

Recommendations?

share|improve this question
    
what web browser are you using? –  cas Sep 21 '13 at 1:40
    
I'm using Firefox. Firefox was fine before I changed video drivers from fglrx to radeon open source. –  MountainX Sep 21 '13 at 1:44
    
I'd switch back then. –  slm Sep 21 '13 at 1:45
    
whether you switch back to fglrx or not, i'd still recommend disabling smooth-scrolling and hw acceleration - in my experience, they're nothing but trouble. –  cas Sep 21 '13 at 1:47
    
That's interesting. I have both of those enabled (and those have been my settings for a long time). I will try disabling them before I switch drivers. Thanks –  MountainX Sep 21 '13 at 1:50
show 3 more comments

2 Answers 2

If you are using Firefox (aka Iceweasel), try disabling autoscrolling, smooth scrolling and hardware acceleration.

You can do that in: Edit Menu -> Preferences -> Advanced Tab -> General

share|improve this answer
    
The "Check my spelling as I type" option is also a performance hit. I have all four options under "Browsing" disabled. –  cas Sep 21 '13 at 1:52
add comment
up vote 0 down vote accepted

I switched back to the proprietary fglrx driver. I notice several things:

  1. The Firefox text editing bug is gone.
  2. In general usage application windows open a lot faster.
  3. KDE 4.11.1 has a minor bug with the fglrx driver that will be fixed in the next point release: window side borders are not drawn at first (but appear after a focus change).

I could not tolerate the Firefox text editing bug or the general slowness with the open source radeon driver, so I switched back to the fglrx driver even though I would prefer the open source driver in ideal circumstances.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.