After some time that the computer runs, Xorg starts using ridiculous amounts of RAM: On startup it uses only 50-80 MB, after a few hours it reaches 400-600 MB, and after 2-3 days it can reach more than 1.2 GB(!) on a 3 GB RAM machine (I'm using Task Manager to see the RAM usage).
Is there a way to stop this from happening?
Is there a way to reduce the memory without rebooting/logging out?
I was considering to try installing Oibaf graphics drivers - is it a good idea? Might it solve the problem?
Update: Tried Oibaf's ppa, but it doesn't seem to solve the problem.
I'm using Xubuntu 16.04.1 on a Dell Inspiron N4030.
here is the output of sudo lshw -C video
*-display
description: VGA compatible controller
product: RV710/M92 [Mobility Radeon HD 4330/4350/4550]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:01:00.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
configuration: driver=radeon latency=0
resources: irq:30 memory:c0000000-cfffffff ioport:e000(size=256) memory:fbe20000-fbe2ffff memory:fbe00000-fbe1ffff