Ever since i installed kubuntu early this year I had found a memory leak in the kde4 process (heap region) to the point of making Kubuntu unusable. I've been waiting for it to get fixed but no change in the latest kde version so I've decided to post here to let others know about it.

My laptop has 3 gb of RAM + 5 gb of SWAP. In a matter of 2 hrs all of that memory is exhausted. The heap region of the kde4 process grows continually until there's no more swap at which point the laptop freezes w/ non-stop disk access taking place.

Anyone else seen this BUG?

Laptop details:
HP G60 (amd turion dual-core RM-72)
kubuntu 11.04 64-bits (natty)





Thanks,
JC

did some Googling and found some similar posts including this bug, https://bugs.kde.org/show_bug.cgi?id=206317 and this post http://kubuntuforums.net/forums/index.p ... =3116758.0

there is the suggestion that it's a power management problem (at least for these posters), try disabling power management in systemsettings -> system admin -> startup & shutdown -> service manager then reboot to see if this is indeed your problem

google01103 wrote:did some Googling and found some similar posts including this bug, https://bugs.kde.org/show_bug.cgi?id=206317 and this post http://kubuntuforums.net/forums/index.p ... =3116758.0

there is the suggestion that it's a power management problem (at least for these posters), try disabling power management in systemsettings -> system admin -> startup & shutdown -> service manager then reboot to see if this is indeed your problem

Wow that solved it! KDE is now much faster too. Thanks!
Has this been posted as an official bug ?

pleas add your experience to https://bugs.kde.org/show_bug.cgi?id=206317

just 1 more question. ANy idea how to hibernate the laptop now that power management is off?

these are the commands but no idea if they'll run (think they should) and if so if the system will restart properly as I've never tried. If it works you should check if they restart the power management daemon when you restart.

suspend to disk: powersave -U
suspend to ram: powersave -u

I didn't have the powersave cmd, so I used
/usr/lib/hal/scripts/linux/hal-system-power-hibernate-linux
The only problem is that it doesn't prompt for password when coming back from hibernation.

you can try this solution viewtopic.php?f=66&t=94676#p194199

fyi - at some point when you upgrade KDE you won't find HAL as it's been deprecated and replaced with udev http://en.wikipedia.org/wiki/HAL_(software)#Deprecated