I have a problem with my Epson Stylus Photo R300M: it apparently chooses to work only randomly. I have been able to install it and print with no problems, but sometimes i boot and it is not detected by the system, ie CUPS does not show it as a device and it says "Unable to open USB device "usb://EPSON/Stylus%20Photo%20R300": No such device". Running a dmesg i get the following:
Code:
hernan@hernan:~$ dmesg | grep -i usb
usbcore: registered new driver usbfs
usbcore: registered new driver hub
ehci_hcd 0000:00:10.3: VIA Technologies, Inc. USB 2.0
ehci_hcd 0000:00:10.3: new USB bus registered, assigned bus number 1
ehci_hcd 0000:00:10.3: USB 2.0 enabled, EHCI 1.00, driver 2004-May-10
hub 1-0:1.0: USB hub found
ohci_hcd: 2004 Feb 02 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
USB Universal Host Controller Interface driver v2.2
uhci_hcd 0000:00:10.0: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
uhci_hcd 0000:00:10.0: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
uhci_hcd 0000:00:10.1: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (#2)
uhci_hcd 0000:00:10.1: new USB bus registered, assigned bus number 3
hub 3-0:1.0: USB hub found
uhci_hcd 0000:00:10.2: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (#3)
uhci_hcd 0000:00:10.2: new USB bus registered, assigned bus number 4
hub 4-0:1.0: USB hub found
usbcore: registered new driver usblp
drivers/usb/class/usblp.c: v0.13: USB Printer Device Class driver
PCI0 UAR1 USB1 USB2 USB3 EHCI PS2M PS2K AC9 MC9 ILAN
usb 1-2: new high speed USB device using address 3
usb 1-2: device not accepting address 3, error -71
usb 2-1: new full speed USB device using address 2
usb 2-1: config 1 has an invalid descriptor of length 24, skipping remainder of the config
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: string descriptor 0 read error: -22
usb 2-1: USB disconnect, address 2
usb 2-1: new full speed USB device using address 3
usb 2-1: USB disconnect, address 3
usb 1-1: new high speed USB device using address 6
usb 1-1: device not accepting address 6, error -71
So USB is working, in fact my Mustek scanner works no problem-- so the problem is that "device not accepting address #, error -71", which appears twice: when i booted the PC and when I disconnected and reconnected the printer. Searching for "has an invalid descriptor of length" on google returned a patch
(cannot display URL because too few posts...)
but I have no idea if it will work, or even _how to apply it_. Apparently this is a kernel patch... I have no problem recompiling the kernel.
Any help appreciated!!!
Hernan
