Hi James. For what it is worth I had a similar problem with 12.04 and 12.10 and found the only solution was to reinstall 12.10 and refrain from doing any updates. 13.04 works OK with all updates loaded, but I used both with a Ubuntu One link as security until I was sure.
Regards, Martin Dixon On 22/08/13 13:21, James Morrissey wrote: > Dear all, > > I am wondering if someone can help me with a major problem that i have > been having in Ubuntu, pertaining to a notoriously hard to diagnose > issue of random freezing. > > The problem started in 13.04, which would freeze randomly, from the > day i installed it. I persisted with the issue for a while, hoping > that it would work itself out with subsequent kernel updates and as > 13.04 was patched. Unfortunately 2 months in i was still losing work > to random freezes. > > I thus found myself with a free weekend and so decided to downgrade to > 12.04 which had worked for me previously. Frustratingly however, i > found that the problem now manifest there as well (there had been no > problem in 12.10 previously). > > A system freeze appears to happen at random, although it is possibly > related to having the machine on battery power. When it happens I > can't input anything, and if there is a song playing it skips. Only > way out is a hard reboot. > > I remain on 12.04, 64 bit. I have updated my bios, and run memtest86. > The latter found no errors and the former has not improved things. The > machine is a Lenovo x131e, Intel, with integrated graphics and > broadcom wireless. > > I have tried filling a bug > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1174275, but got > stuck as i could not properly test the upstream kernel as wireless > would not work. > > The fact that there was a wireless problem on Broadcom BCM43228 and > that the freeze appears to correlate with having the machine on > battery power (i am still testing this) means that i thought it might > be a problem with powersave on the wireless card. There were a number > of posts about this but the general solution seemed to be to turn off > the powersave option on the card > (http://robertbeal.com/1248/ubuntu-10101104-freezing-battery-power). I > did this to no avail as i still got a freeze when the machine was on > battery power. > > I have also tried posting this problem on the forums > (http://ubuntuforums.org/showthread.php?t=2166195), providing a list > or kernel errors that i get after a freeze. Understanding this list is > beyond my ability, so i don't know where to start. I haven't had much > luck with anyone there. > > At this point i am not sure what else to do. I don't know how to > diagnose the problem any further as many forums simply say that > analysing a system freeze is difficult. This is a bit of a massive bug > for me as random system freezes really interrupt with my daily work. > > I'd love to get this resolved, or at least work out what the problem > is so that i can get it reported. Ideally i'd have 13.04 working, but > will settle for 12.04. > > If anyone can give me any advice on what steps to take to work out > what the problem is, i would really appreciate it. > > Thanks, > > James. > > > >
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