2015-10-21 13:42 GMT+02:00 Gabriele Mazzotta <gabriele.mzt@xxxxxxxxx>: > 2015-10-21 13:12 GMT+02:00 Darren Hart <dvhart@xxxxxxxxxxxxx>: >> On Wed, Oct 21, 2015 at 01:00:59PM +0200, Pali Rohár wrote: >>> On Wednesday 21 October 2015 11:19:54 Pali Rohár wrote: >>> > On Wednesday 21 October 2015 10:57:24 Darren Hart wrote: >>> > > On Sun, Oct 18, 2015 at 09:34:56AM +0000, bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: >>> > > > https://bugzilla.kernel.org/show_bug.cgi?id=106031 >>> > > > >>> > > > --- Comment #2 from Britt Yazel <bwyazel@xxxxxxxxx> --- >>> > > > Confirmed. Blacklisting the dell_rbtn module solves this issue >>> > > >>> > > Pali, >>> > > >>> > > Can you take a look at this bug report regarding a 4.2 regression for rfkill >>> > > after the introduction of the dell-rbtn driver please. >>> > > >>> > >>> > Hi! This looks strange. Driver dell_rbnt is just receiver of BIOS/ACPI >>> > events. It receive hotkey or slide switch event and translate it into >>> > either linux input keypress or rfkill block event. But dell_rbnt driver >>> > itself cannot set or change wireless rfkill or airplane mode. >>> > >>> > So my opinion is that BIOS/ACPI could send such event, dell_rbnt then >>> > propagate it into userspace and some application process it and do >>> > something... >>> > >>> >>> CCing Gabriele, owner of XPS machine too. Have you seen similar problems >>> with dell_rbtn as described in above bug report? > > I'll look into this ASAP. I haven't been using dell_rbtn not to disable > the hardware switch, but I didn't notice anything strange the last time > I tested it. I went back to see the old thread about dell-rbtn and apparently I was aware of this problem [1]. So yes, I confirm the bug. We are assuming that RBTN receives notifications only when a button function keys are pressed, but this is true only for some laptops, while others, such as my XPS13, send a notification also on resume [2]. This makes things a bit more complicated. CCed Alex since he might be interested in this. [1] https://marc.info/?l=linux-kernel&m=141927583032180 [2] https://marc.info/?l=linux-kernel&m=141941243829713 -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
