Rodolfo Medina <rodolfo.med...@gmail.com> writes: > Darac Marjal <mailingl...@darac.org.uk> writes: > >> On Mon, Feb 02, 2015 at 10:06:43AM +0000, Rodolfo Medina wrote: >>> Hi all. >>> >>> With Debian 8: on my Acer netbook, when logging in, if I rotate the screen, >>> many undesired lines appear on the console complaining: >>> >>> usb 2-1: device descriptor read/64, error -71 >>> >>> . No usb device is inserted in the machine, but the error message disturbs >>> the logging in. With previous Debian versions, such kernel messages were >>> avoided simply appending to /etc/init.d/rc.local the line: >> >> Check lsusb. Some machines have internally connected USB devices. See if >> you have anything connected at Bus 002 Device 001. Error -71 is, >> apparently, a "protocol error", which might suggest that the screen >> rotation is either causing a bit of noise on a cable (is there, for >> example, a USB hub built into your monitor?) or perhaps your monitor is >> trying to communicate the fact that it has rotated over USB and that's >> failing. >> >>> >>> dmesg -n 1 >>> >>> , but now this does not help any more. > > > > Here's the output of `lsusb': > > Bus 005 Device 012: ID 0c45:62c0 Microdia Sonix USB 2.0 Camera > Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > > Notice that with Debian 6, installed on another partition of the same > machine, the problem does not occur, the message doesn't appear.
It seems to be solved appending to the file /etc/init.d/rc.local the following stuff: dmesg -n 1 ; and, besides, in /etc/sysctl.conf uncommenting the following line: kernel.printk = 3 4 1 3 Rodolfo -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/87egnmxrd5.fsf...@gmail.com
