Gunther Piez gpiez at
Sat Aug 27 13:39:39 BST 2011

On 27.08.2011 00:17, Ciprian Ciubotariu wrote:
> I have had the same problem, but with all the KDE applications. Those
> that have more controls seem to get the hit first though. At the same
> time, no-KDE apps (emacs for instance) was speedy as usual.
> >From some talks on irc, bug lists, mailing lists and forums, it seems it
> was related to the video drivers, leaking kwin effects or some similar
> problems. However, speaking to KDE developers it seems most don't leave
> computers on for more days, so this may take a while to get fixed.
> On Fri, 2011-08-26 at 23:58 +0300, Leon Pollak wrote:
>> On Friday 26 August 2011 10:10:10 Esben Mose Hansen wrote:
>>> On 08/25/2011 01:20 PM, Leon Pollak wrote:
>>>> After some time of kde-kdevelop running (sometimes 15-20hours, sometimes
>>>> after 0.5h), kdevelop becomes too slow: moving in the text suffers from
>>>> 1-2s delays, source file switching is very slow, moving between 'debug'
>>>> and 'code' working sets is VERY slow, etc.
>>>> Restart of the kdevelop does not solve the issue, but restart of the
>>>> whole computer does... till the next time it appears...:-(
>>> Does turning off compositor (default Alt-Ctrl-F12) help?
>> WOW!!! It seems to help, although I do not know what I did with that - google 
>> does not provide clear enough (for me) description.
>> So, I pressed Alt-Ctrl-F12 and received the black screen with blinking cursor, 
>> which was expected...:-)
>> Then, I pressed Alt-Ctrl-F1 to return to the graphic screen, but now kdevelop 
>> seems to work fast back!!
>> What does it mean? How does it work?
>> Thanks a lot ahead for clarification!!!
>> And a lot of saved time and nerves!!!
I have suffered this problem too in the past. I remember a thread in the
nvidia forums related to this. Possibly a memory leak or memory
fragmenting in the X server. But since the I changed my hardware and
it's gone for now...
BTW, you are talking about two different things: Turning off compositing
is Shift-Alt-F12, while switching to a console is Ctrl-Alt-F12.

- Gunther

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