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On 08/02/12 14:27, bad apple wrote: > > I have seen this before although not for a while, on both an x86 Solaris > machine and an Ultrasparc Linux server (there seems to be something > about Sun code that is more vulnerable to this error), and also on the > Ubuntu workstation I was using to connect to them remotely from. > Symptoms were exactly the same as yours and were fixed by a chmod of > .ICEauthority. I eventually tracked the issue down to my frequent use > of starting remote X applications over SSH forwarding with incorrect > permissions, particularly when having to force the issue with sudo. I > don't remember the exact details of it now but there was very little > information about in on google at the time - it boiled down to because > gksudo wasn't available on either the Solaris or the UltraSparc remote > machines, which is normally the correct mechanism for invoking GUI apps > with superuser rights, I was using sudo/pfexec to launch them instead > and this triggered a bug somewhere, presumably in the handling of the X > magic-cookies and/or session information. > > Anyway, you've found exactly the same fix I did - just chmod > .ICEauthority. Incidentally, when my machines were effected by this the > two linux boxes required the fix to log in to the GUI again whereas the > Solaris box bitched and moaned a lot during WM startup and took an extra > couple of minutes, but would still fully log in. More vulnerable and > more resistant at the same time, strangely. > > Didn't think anyone else would bump into this bug in a hurry. You > certainly don't need to rebuild or do anything drastic though. So have > you been doing any remote X-forwarding over SSH recently by any chance? > > Regards, > > Mat > Thanks for your explanation, very interesting. I have never come across it before after about eleven years with Linux. And to answer you final question, I don't do any forwarding over SSH at all. So I have no idea what caused it to happen. At least if it does I will know what to do!! It was all as normal up to yesterday, then this morning oops! Regards Neil -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq