[Nut-upsuser] nutups with MGE Evolution via USB

Rodrigo Ventura yoda at isr.ist.utl.pt
Fri Jun 9 23:06:10 UTC 2006

On Friday 09 June 2006 18:09, Charles Lepple wrote:
> On 6/9/06, Rodrigo Ventura <yoda at isr.ist.utl.pt> wrote:
> > I'm getting dmesg flooded with messages like this one:
> >
> > usbdevfs: usb_submit_urb returned -28
> >
> > What's wrong? I'm using Linux kernel 2.4.32 and nut-2.0.3.
> Can you describe your setup a little more? Do you have other USB
> devices in the system? Are they plugged into the same external or root
> hub?

Sure. The machine is a Compaq Proliant ML350 (G3), P4 Xeon, the UPS is the 
only device on the bus. It is the central server of the institution, running 
all mail (MTA and IMAP), UNIX accounts, and user web pages.

The USB tree is dead simple:

# cat /proc/bus/usb/devices
T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 4
B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0000 ProdID=0000 Rev= 0.00
S:  Product=USB OHCI Root Hub
S:  SerialNumber=f88ba000
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=   2 Ivl=255ms
T:  Bus=01 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#=  2 Spd=1.5 MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=0463 ProdID=ffff Rev= 1.00
S:  Manufacturer=MGE UPS SYSTEMS
S:  Product=Evolution
S:  SerialNumber=AF3G03062
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 40mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=00 Prot=00 Driver=(none)
E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=20ms

Maybe the server MB is old, and USB not quite supported, or buggy hardware, or 
maybe a BIOS firmware update might help (but I guess the kernel handles the 
USB hardware directly).



Rodrigo Ventura

More information about the Nut-upsuser mailing list