From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: Weird interrupt problem From: Michel =?ISO-8859-1?Q?D=E4nzer?= To: Benjamin Herrenschmidt Cc: linuxppc-dev@lists.linuxppc.org In-Reply-To: <20020808120700.30639@192.168.4.1> References: <1028761518.1262.1236.camel@tibook> <20020808120700.30639@192.168.4.1> Content-Type: text/plain; charset=ISO-8859-1 Date: 16 Aug 2002 19:01:23 +0200 Message-Id: <1029517283.26309.2560.camel@pooky> Mime-Version: 1.0 Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: On Thu, 2002-08-08 at 14:07, Benjamin Herrenschmidt wrote: > > >Today this happened to me the second time: All of a sudden, the USB > >mouse stopped working. At the same time this appeared in the syslog: > > > >Aug 7 17:19:57 tibook kernel: Unhandled interrupt 1d, disabled > > > >Plugging the mouse to the other socket worked, but it wouldn't work > >again in the original one. As you can see in the attached > >/proc/interrupts, interrupt 29 (=1d) is unknown. Interestingly, > >interrupt 28 seems to be for the USB socket which stopped working (I > >think it was the same one when the first problem first occured, might be > >coincidence though). Was it somehow rewarded for its 100'000th > >occurence? ;) Seriously, is it possible that the number changed somehow? > > > > > >This wouldn't be all that bad, if the whole system wasn't very sluggish > >afterwards. When it occured the first time, I had CONFIG_TAU enabled in > >the kernel, which Ben said might cause the sluggishness at least. But > >now it's disabled. > > > > > >This is on a TiBook III/667 running 2.4.18-ben0-lotsanicestuff if it > >matters. The first occurence was with 2.4.19-presomething-ben0. > > > > > >Has anyone experienced anything similar? > > Really weird. It looks like the openpic is going south. Seriously, looks > like a HW problem, that is the interrupt controller starts giving us > bogus interrupt numbers. Doesn't sound good at all :( Well, now the machine is off to Apple to repair PMU problems. Maybe this was a kind of an early warning sign. -- Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer XFree86 and DRI project member / CS student, Free Software enthusiast ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/