[Ubuntu-SG] Jaunty UXA and Battery

Tom Goh tomgohj at gmail.com
Wed Jun 3 19:02:47 BST 2009

Hi Nick,

Thanks for the tips.  Found that UXA running with hiMem/Pae (Server 
version. I need it to realize my full 4GB of memory, run a number of VMs 
for testing) does not work at all.  Will have to wait for that to be 
fixed, which doesn't seem likely as Karmic Koala still has this bug and 
nobody has triaged it yet.

Power Governor is set to On-demand which I have read is the best option. 
    PowerTop did help quite substantially in Intrepid, but still no 
where near what XP does (not that I use XP at all).

I am thinking of reinstalling completely and run a minimal gnome 
install, even considering dropping the 32 bit server version and using 
32 or 64 bit desktop.

Nick HS wrote:
> On Wednesday 03,June,2009 04:33 PM, Tom Goh wrote:
>> Only issue so far are:
>> 1. the compiz/"Visual Effects" performance on Intel integrated graphics
>> card.  I had to turn it off as it was so slow.  I can live without that.
>> can't seem to find xgl package which supposedly enhances the performance.
> You can try switching to UXA, depending on your graphics card this can 
> give better performance. There is a helpful wikipage [1] and forums 
> walkthrough [2] on solving the performance regressions (but I don't 
> recommend installing a newer kernel)
>> 2. Battery life is very bad.  When I first tested XP on the new system I
>> was getting about 4.5 hours.  With Ubuntu I was getting 2.5 hours.  This
>> appears to still be the same in Jaunty.
> I would take a look at which power governor is running the show, as well 
> as following powertop's suggestions.
> Thanks Nick
> [1] https://wiki.ubuntu.com/X/Troubleshooting/IntelPerformance
> [2] http://ubuntuforums.org/showthread.php?t=1130582

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