I own a Mitsubishi Diamond Pro 2040u monitor. It has a built-in
USB hub for the monitor and keyboard. The problem is, when I plug
this hub into my computer, I get a ton of timeout delays and error
messages. Something is going very wrong.
Amazingly, after about 5 minutes of thrashing (see the end of the
dmesg log below), everything sorts out and the hub starts to work!
However, there's still a problem: /proc/bus/usb/devices is very
garbled.
I'm pretty sure this indicates a bug in the Linux USB stack.
Below I've included as much information as I could gather. What
else should I investigate?
Thank you,
- Scott
Here is /proc/bus/usb/devices. It looks excellent except for
the following three lines. The following strings are clearly
corrupted:
S: Manufacturer=MITSUBISHI ELECTRIC?NSB1107U?911001603 ??
S: Product=NSB1107U?911001603 ???????�??~?????�????
S: SerialNumber=911001603 ???????�??~?????�???�
bronson@vesper:~$ cat /proc/bus/usb/devices
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc=104/900 us (12%), #Int= 2, #Iso= 0
D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 0.00
S: Product=USB UHCI Root Hub
S: SerialNumber=d400
C:* #Ifs= 1 Cfg#= 1 Atr=40 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= 8 Ivl=255ms
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 5 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=04b8 ProdID=0005 Rev= 1.00
S: Manufacturer=EPSON
S: Product=USB Printer
S: SerialNumber=NTOLL0107281547590
C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 2mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=07(print) Sub=01 Prot=02 Driver=usblp
E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl= 0ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl= 0ms
T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=02 Dev#= 2 Spd=12 MxCh= 5
D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0409 ProdID=55ab Rev= 1.00
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=02 Prnt=02 Port=02 Cnt=01 Dev#= 3 Spd=1.5 MxCh= 0
D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0452 ProdID=0083 Rev= 1.00
S: Manufacturer=MITSUBISHI ELECTRIC?NSB1107U?911001603 ??
S: Product=NSB1107U?911001603 ???????�??~?????�????
S: SerialNumber=911001603 ???????�??~?????�???�
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=hid
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl= 10ms
T: Bus=01 Lev=02 Prnt=02 Port=04 Cnt=02 Dev#= 4 Spd=1.5 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=046d ProdID=c00e Rev=11.00
S: Manufacturer=Logitech
S: Product=USB-PS/2 Optical Mouse
C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr= 98mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=02 Driver=hid
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl= 10ms
Here is dmesg on boot:
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-uhci.c: $Revision: 1.268 $ time 15:45:23 Oct 13 2001
usb-uhci.c: High bandwidth mode enabled
PCI: Found IRQ 5 for device 00:07.2
PCI: Sharing IRQ 5 with 00:0c.0
usb-uhci.c: USB UHCI at I/O 0xd400, IRQ 5
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
usb-uhci.c: v1.268:USB Universal Host Controller Interface driver
hub.c: USB new device connect on bus1/2, assigned device number 2
hub.c: USB hub found
hub.c: 5 ports detected
Adding Swap: 377516k swap-space (priority -1)
hub.c: USB new device connect on bus1/2/3, assigned device number 3
usb.c: USB device 3 (vend/prod 0x452/0x83) is not claimed by any active
driver.
Real Time Clock Driver v1.10e
hub.c: USB new device connect on bus1/2/5, assigned device number 4
usb.c: USB device 4 (vend/prod 0x46d/0xc00e) is not claimed by any active
driver
.
usb.c: registered new driver hid
usb.c: registered new driver usb_mouse
usb-uhci.c: interrupt, status 3, frame# 395
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 302
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 209
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 172
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 83
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 2044
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 1938
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 1884
Linux Tulip driver version 0.9.15-pre7 (Oct 2, 2001)
PCI: Found IRQ 10 for device 00:09.0
eth0: Macronix 98715 PMAC rev 32 at 0xe000, 00:A0:0C:C0:55:F3, IRQ 10.
... boot continues, loading some other modules, then ...
ReiserFS version 3.6.25
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 1680
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 1693
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 1735
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 1951
usb_control/bulk_msg: timeout
: USB HID v1.00 Device [MITSUBISHI ELECTRIC?NSB1107U?911001603 ??
NSB1107U?91100
1603 ???????<F7>??~?????<FF>????] on usb1:3.0
input0: USB HID v1.10 Mouse [Logitech USB-PS/2 Optical Mouse] on usb1:4.0
hid-core.c: v1.8 Andreas Gal, Vojtech Pavlik <[EMAIL PROTECTED]>
hid-core.c: USB HID support drivers
usbmouse.c: v1.6:USB HID Boot Protocol mouse driver
mice: PS/2 mouse device common for all mice
These are the modules I currently have loaded:
parport_pc 19400 0 (autoclean) (unused)
lp 4832 0 (autoclean)
parport 23232 0 (autoclean) [parport_pc lp]
printer 5440 1
mousedev 3776 1
tuner 4484 1 (autoclean)
tvaudio 8000 0 (autoclean) (unused)
msp3400 13712 1 (autoclean)
bttv 54624 0
videodev 4608 3 [bttv]
i2c-algo-bit 6956 1 [bttv]
i2c-core 12672 0 [tuner tvaudio msp3400 bttv i2c-algo-bit]
trident 25632 0
soundcore 3556 3 [trident]
ac97_codec 9088 0 [trident]
mga 96560 1
agpgart 27104 3
8139too 13088 0 (unused)
tulip 35072 1
usbmouse 1760 0 (unused)
hid 12448 0 (unused)
input 3328 0 [mousedev usbmouse hid]
rtc 5240 0 (autoclean)
usb-uhci 20644 0 (unused)
usbcore 47104 1 [printer usbmouse hid usb-uhci]
unix 13700 149 (autoclean)
ide-disk 6560 6 (autoclean)
ide-probe-mod 7968 0 (autoclean)
ide-mod 129388 6 (autoclean) [ide-disk ide-probe-mod]
reiserfs 145376 5 (autoclean)
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