Hi, Janna Martl <janna.martl109@xxxxxxxxx> writes: > On 2016-04-04 9:06:28, Olliver Schinagl wrote: >> Hi list, >> >> I have a Apple Inc. MacBookPro11,1 (with the most recent 'bios': BIOS >> MBP111.88Z.0138.B16.1509081438 09/08/2015). >> At the beginning, USB worked normally. After a while (and after newer kernel >> versions released by debian?) things started to act strangely. For one, the you need to try with latest kernel from Linus. Please download v4.6-rc3 from kernel.org, compile and try with that. >> bios/efi boot takes a very long time (probably due to the same reason I describe >> later) just to get to the bootloader/grub. Likley resetting and probing for USB >> ports/mass storage. When grub finally pops up, I can use the (internal USB based >> keyboard) normally to select a grub entry etc. >> Booting the kernel then works reasonably fine, until it loads the xhci module. >> It spews some messages in dmesg (taking some 15 seconds) and only then, the >> keyboard starts to work again. which messages ? We need these dmesg messages > I have the same hardware and am having the same problem. For me, it > works properly about half the time. I've discovered two things that > might be helpful: > > (1) When I don't have the problem, I have an efivars entry > /sys/firmware/efi/efivars/usb-cr-rec-7c436110-ab2a-4bbb-a880-fe41995c9f82 > and when I do have the problem, this entry is not present. (AFAICT this > is the only thing that changes in efivars, except for something that > looks like a boot counter.) > > For the record: > > $ hexdump usb-cr-rec-7c436110-ab2a-4bbb-a880-fe41995c9f82 > 0000000 0006 8000 0001 0000 > 0000008 > > (2) Unlike (1) this is not a 100% correlation, but usually when it works > properly, my internal keyboard turns up as /dev/input/event5, and when there's > a delay, it turns up as event12, event13, or event14 (and this sometimes this is a consequence of XHCI taking too much time to register... > changes after suspend, when there's also a delay correlated to the boot > delay). > > From /proc/bus/input/devices when it works: > > I: Bus=0003 Vendor=05ac Product=0259 Version=0111 > N: Name="Apple Inc. Apple Internal Keyboard / Trackpad" > P: Phys=usb-0000:00:14.0-5/input0 ... note that your keyboard is just a USB device. -- balbi
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