Bugzilla – Bug 494216
does not allow ttyUSB devices for serial tablet config
Last modified: 2009-04-14 06:59:32 UTC
User-Agent: Mozilla/5.0 (compatible; Konqueror/3.5; Linux 2.6.25.5-1.1-pae) KHTML/3.5.9 (like Gecko) SUSE I'm running openSuSE 11.0 on a PC with a A7VBX-X motherboard, which has only one serial port, which is dedicated to my external 56Kbaud modem. I also have a Wacom Intuos serial tablet which I want to use with the Gimp, so I acquired a USB--tty adapter which provides two additional serial ports at /dev/ttyUSB0 and /dev/ttyUSB1. When I attach the tablet to /dev/ttyUSB0 and attempt to make it available via Sax2, these two new ports do not appear on the list of available devices, though I am able to view data coming into the system via the wacdump program. Reproducible: Always Steps to Reproduce: 1. Plug the USB--tty adapter into a free USB port. dmesg shows usb 3-2: new full speed USB device using uhci_hcd and address 8 usb 3-2: configuration #1 chosen from 1 choice ftdi_sio 3-2:1.0: FTDI USB Serial Device converter detected drivers/usb/serial/ftdi_sio.c: Detected FT2232C usb 3-2: FTDI USB Serial Device converter now attached to ttyUSB0 ftdi_sio 3-2:1.1: FTDI USB Serial Device converter detected drivers/usb/serial/ftdi_sio.c: Detected FT2232C usb 3-2: FTDI USB Serial Device converter now attached to ttyUSB1 usb 3-2: New USB device found, idVendor=0403, idProduct=6010 usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 3-2: Product: CHAIRSIDE(tm) Machine Interface v1 usb 3-2: Manufacturer: FTDI 2. Run wacdump. See data coming across the line from the tablet. (wacdump is a curses-like program that does not appear to output plain text; here's a screen-scraping:) MODEL=Wacom Intuos 9x12 ROM=1.2-7 CLS=Serial VNDR=Wacom DEV=Intuos SUB=GD-0912-R TOOLTYPE=NONE SERIAL=0x00000000 IN_PROX=out BUTTON=+00000 (+00000 .. +00000) POS_X=+00000 (+00000 .. +30480) POS_Y=+00000 (+00000 .. +24060) ROT_Z=+00000 (-00900 .. +00899) DISTANCE=+00000 (+00000 .. +00000) PRESSURE=+00000 (+00000 .. +01023) TILT_X=+00000 (-00064 .. +00063) TILT_Y=+00000 (-00064 .. +00063) ABSWHEEL=+00000 (+00000 .. +01023) RELWHEEL=+00000 (+00000 .. +00000) THROTTLE=+00000 (-01023 .. +01023) LEFT= MIDDLE= RIGHT= EXTRA= SIDE= TOUCH= STYLUS= STYLUS2= BT0= BT1= BT2= BT3= BT4= BT5= BT6= BT7= BT8= BT9= BT10= BT11= BT12= BT13= BT14= BT15= ReadRaw: -1 (20)BT17= BT18= BT19= BT20= BT21= BT22= BT23= (The numbers do change while the program is running.) 3. a. Start Sax2. b. Select "Tablet" c. Check "Activate this tablet" d. Select "Wacom" in the left column e. Select "(Intuos V1+2 serial)" in the right column f. Select tab "Port and Mode" g. Open the "Connection Port" pulldown. Actual Results: Ports available from step 3.g. are USB COM1 (/dev/ttyS0) COM2 (/dev/ttyS1) COM3 (/dev/ttyS2) COM4 (/dev/ttyS3) Expected Results: Ports available from step 3.g. should be USB COM1 (/dev/ttyS0) COM2 (/dev/ttyUSB0) COM3 (/dev/ttyUSB1)
And the next user will request also ttyUSB2 since he wants to connect it to his second USB-->Serial adapter?!? This is really a very special case, which we IMHO don't need to support. You can be happy, that your USB->Serial adapter is supported at all. It's not that hard to replace ttyS0 with ttyUSB0 in xorg.conf ... WONTFIX
I have already tried doing that, but then X will not come up. All I get is a black screen that blinks every second.
In my opinion Sax2 should not be relying on a hard-coded list of devices, but should scan the system for available serial devices. If it did so, no further fixes would be necessary.
*** This bug has been marked as a duplicate of bug 494224 ***