On Fri, Jan 11, 2013 at 10:04 PM, Alex Riesen <raa.l...@gmail.com> wrote: > Hi, > > the USB stick (an Cruzer Titanium 2GB) was not recognized at any of > the USB ports of this system (an System76 lemu4 laptop, XHCI device) > after it was removed. If I attempt to insert it again in any of the > ports (one of the two USB3, or the USB2) the led on the stick lights > up shortly and if off again. There is no media detection messages in > the dmesg output, only that from the first time: > > usb 1-1.2: new high-speed USB device number 3 using ehci-pci > usb 1-1.2: New USB device found, idVendor=0781, idProduct=5408 > usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 > usb 1-1.2: Product: U3 Titanium > usb 1-1.2: Manufacturer: SanDisk Corporation > usb 1-1.2: SerialNumber: 0000187A3A60F1E9 > scsi6 : usb-storage 1-1.2:1.0 > io scheduler deadline registered (default) > usb 1-1.2: USB disconnect, device number 3 > > The kernel is v3.8-rc3. I never had this problem in 3.7. I could almost > reproduce the problem later in a simplified setup (init=/bin/bash) on > USB3 ports by inserting and removing the stick quickly. Almost - because > the USB3 ports recovered after some time, while the USB2 port never > experienced the problem.
One more detail: I usually use the "noop" elevator. That time it was the "deadline". And I just reproduced it easily with "deadline". -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
