Re: Debian 64-bit an Dell Vostro 3750 - freezes sometimes with message [Firmware Bug] ACPI(PEGP) dedefines _DOD but not _DOS

[Wojtek Zabolotny <W.Zabolotny@elka.pw.edu.pl>]

Well, I have seriously mistaken in my first message.
The problem is not related to the video adapter. The correlation with connection of USB devices was also incorrectly interpreted.
When I connected the second device I simply used one of USB 3.0 jacks.
When I run into troubles when connecting single USB devices - it was also when I randomly used one of two USB 3.0 jacks...

Now I have both mentioned in the first message USB devices plugged into USB 2.0 jack and into the SATA/USB 2.0 combo jack and everything works perfectly!

When I connect the USB GPRS/UMTS modem to the USB jack after system is booted correctly, I get first in /var/log/messages:

Oct 30 20:27:43 WZLap kernel: [  603.363412] usb 2-1: new high speed USB device
number 2 using xhci_hcd
Oct 30 20:27:43 WZLap kernel: [  603.382254] xhci_hcd 0000:03:00.0: WARN: short
transfer on control ep
Oct 30 20:27:43 WZLap kernel: [  603.382752] xhci_hcd 0000:03:00.0: WARN: short
transfer on control ep
Oct 30 20:27:43 WZLap kernel: [  603.383236] xhci_hcd 0000:03:00.0: WARN: short
transfer on control ep
Oct 30 20:27:43 WZLap kernel: [  603.383378] usb 2-1: New USB device found, idVe
ndor=12d1, idProduct=1446

and then a lot of messages:

Oct 30 20:27:48 WZLap kernel: [  609.270026] xhci_hcd 0000:03:00.0: WARN: Stalled endpoint
Oct 30 20:27:48 WZLap kernel: [  609.274685] xhci_hcd 0000:03:00.0: WARN: Stalled endpoint
Oct 30 20:27:48 WZLap kernel: [  609.281701] xhci_hcd 0000:03:00.0: WARN: Stalled endpoint
Oct 30 20:27:48 WZLap kernel: [  609.285046] xhci_hcd 0000:03:00.0: WARN: Stalled endpoint

Even though the device seems to work correctly.

Probably I need to try to blacklist the USB 3.0 module...

--
Regards, WZab