I saw some really bad features like this a while ago in Chrome, but I waited a while and it got better again. I'm running Arch, so due to rolling updates you can often just "wait out" bugs and they go away again!
I think it's to do with new GPU accelerated rendering tricks, which can expose buggy graphics drivers. Or it's buggy code in Chrome :) Either way, tuning things in chrome://flags will probably help, if you can work out which knobs to twiddle. On 25 September 2014 13:10, Victor Churchill <victorchurch...@gmail.com> wrote: > On 25 September 2014 12:28, Ralph Corderoy <ra...@inputplus.co.uk> wrote: > > > > > Is there compositing being used, perhaps just for the popups? When did > > this start going wrong? > > > > To be honest I don't know whether compositing is being used I'd imagine > not, as this is running a fairly low level environment. > It just started today - this time; I have not noticed it for quite a while > but I do recollect having had the same thing happen way back over many > years on different systems. > > > > > > The screen artefacts persist over Ctrl-Alt-F1/7, and over going into > > > Display and Desktop settings and changing background and resolution > > > and rotation. > > > > Have you tried a "switch user" so you get a new X server running a login > > manager, then log in as yourself so it switches back to the other one. > > The new X server may initialise the graphics sufficiently to fix things. > > > > Did not try that; I did try hibernating and waking to see if it was a non > persistent memory effect but that did not help. A colleague suggested > closing all applications, and I was reluctant to do that (did not want toi > lose my shell and emacs sessions :) and did not think it would help; but I > did close down Chrome and the other GUI aplications (Calibre, PDF reader, > OpenOffice); was left with a desktop that still looked like something from > an art exhibition, and then after thirty seconds' whirring the white/grey > blocks disapperared one by one and my desktop was restored! > > So apparently one of the apps (I suspect Chrome) was using the desktop > management library incorrectly (or it was buggy) and having an effect > outside its own scope - but recoverably. > > My uptime remains :) > > cheers > > victor > -- > Next meeting: Bournemouth, Tuesday, 2014-10-07 20:00 > Meets, Mailing list, IRC, LinkedIn, ... http://dorset.lug.org.uk/ > New thread on mailing list: mailto:dorset@mailman.lug.org.uk > How to Report Bugs Effectively: http://goo.gl/4Xue > -- Next meeting: Bournemouth, Tuesday, 2014-10-07 20:00 Meets, Mailing list, IRC, LinkedIn, ... http://dorset.lug.org.uk/ New thread on mailing list: mailto:dorset@mailman.lug.org.uk How to Report Bugs Effectively: http://goo.gl/4Xue
