On Fri, 1 Oct 2010, [Windows-1252] Hársszegi Tibor wrote: > > > Hi, > > > > > > Our company is trying to use a USB2VGA adapter from StarTech.com > > > (practically it is a sisusbvga stuff) under OpenSuse. The USB2VGA > > > adapter operates at USB 2.0 high speed. We also have a USB > > 1.1 printer using usblp. The 2 devices are one the same bus. > > > > > > T: Bus=04 Lev=02 Prnt=02 Port=03 Cnt=01 Dev#= 6 Spd=480 MxCh= 0 > > > D: Ver= 2.00 Cls=ff(vend.) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > > > P: Vendor=0711 ProdID=0900 Rev= 1.10 > > > C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=222mA > > > I: If#= 0 Alt= 0 #EPs= 9 Cls=ff(vend.) Sub=00 Prot=00 Driver=sisusb > > > > > > T: Bus=04 Lev=02 Prnt=02 Port=05 Cnt=02 Dev#= 7 Spd=12 MxCh= 0 > > > D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 > > > P: Vendor=13ea ProdID=0326 Rev= 0.16 > > > S: Manufacturer= Scientific Games Ltd > > > S: Product=USB PRINTER > > > S: SerialNumber=0100001060577867 > > > C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=400mA > > > I: If#= 0 Alt= 0 #EPs= 2 Cls=07(print) Sub=01 Prot=02 Driver=usblp You should have included the information for the other devices on this bus. What is the overall topology? > > > When doing transfers to the printer the sisusbvga starts to > > act crazy, > > > starts - after a while - refusing URBs with EPIPE or similar. I tried doing a similar test on my system. It has an Intel ICH5 chipset. I plugged a high-speed hub into the computer, a old full-speed (USB-1.1) hub into that, a flash drive into the full-speed hub, and a high-speed LaCie cdrom drive into the high-speed hub: T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 8 B: Alloc= 0/800 us ( 0%), #Int= 2, #Iso= 0 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1d6b ProdID=0002 Rev= 2.06 S: Manufacturer=Linux 2.6.32.21-168.fc12.i686 ehci_hcd S: Product=EHCI Host Controller S: SerialNumber=0000:00:1d.7 C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms T: Bus=01 Lev=01 Prnt=01 Port=07 Cnt=01 Dev#= 2 Spd=480 MxCh= 4 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=05e3 ProdID=0608 Rev= 7.02 S: Product=USB2.0 Hub C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl=256ms T: Bus=01 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 4 Spd=12 MxCh= 4 D: Ver= 1.01 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=05e3 ProdID=0604 Rev= 0.12 S: Product=USB Hub C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl=255ms T: Bus=01 Lev=03 Prnt=04 Port=03 Cnt=01 Dev#= 6 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1307 ProdID=0165 Rev= 1.00 S: Manufacturer=USBest Technology S: Product=USB Mass Storage Device S: SerialNumber=00000000000126 C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 98mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=83(I) Atr=03(Int.) MxPS= 64 Ivl=8ms T: Bus=01 Lev=02 Prnt=02 Port=03 Cnt=02 Dev#= 7 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=059f ProdID=0202 Rev=10.06 S: Manufacturer=LaCie S: Product=LaCie StudioDrive USB2 S: SerialNumber=11000E000034D580 C:* #Ifs= 1 Cfg#= 2 Atr=c0 MxPwr= 98mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=125us E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=83(I) Atr=03(Int.) MxPS= 2 Ivl=32ms I did concurrent transfers, reading from both the flash device (4 MB) and the cdrom (12 MB) at the same time. The transfers took a few seconds and there were no errors. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
