On 2016-03-16 at 01:00, kamaraju kusumanchi wrote: >> From time to time, this message is printed on my konsole. > > Message from syslogd@hogwarts at Mar 16 00:12:49 ... > kernel:[1219588.659735] do_IRQ: 1.170 No irq handler for vector (irq -1) > > What does it mean? How I can rectify the problem? Is something wrong > with my hardware or is any component on my computer going bad? I had this for months on end, but it stopped happening a month or two ago. You can find mention of it by Googling on 'do_IRQ no IRQ handler for vector 1' without quotes. (Note that that's '1' rather than '-1', to accommodate Google's search syntax. Yes, this finds the right results.) In my case, it meant that a microcode update which was/is needed on my combination of CPU and motherboard was not being applied. This appeared to be because Intel decided that on-the-fly microcode updates in the way that everyone had been doing them for years were not safe, and no longer supported, on at least some CPU models - and so dropped those updates from their shipped microcode files. When the Debian package with those files and/or the tool which applies them was updated to the version which included that change, this message started appearing. The official "right" solution is apparently to update the BIOS/UEFI on your motherboard to one which deals with the issue at that level. In my case, there was no such BIOS/UEFI version available, and my motherboard is old enough that none was or is likely to be coming up. I tried various things, none of which worked, and eventually just gritted my teeth and bore with it. It doesn't seem to cause or reflect any actual functional problem, just a really severe cosmetic issue (which can cause some functional difficulties in practice, because this appears in every terminal - virtual or otherwise - on the entire system). Then, a couple of months back, it stopped happening. I do not know what caused the change, but in current Debian testing, it does not happen for me anymore. -- The Wanderer The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man. -- George Bernard Shaw
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