Hello,

I've got two systems here: a VIA EPIA M10000 and a VIA EPIA CN10000.
The OS is identical: Linux 2.6.19.2 on Debian Etch. The harddisks of the
two systems are exact mirrors with rsync, so I think that rules out
configuration errors.

Relevant differences between the two systems: the M10000 has a
VT8235M south bridge while the CN10000 has a VIA VT8237R.

The problem I'm having:
The M10000 is OK: inserting a USB2.0 pen drive and it is detected as a
high-speed device.
The CN10000 is not OK: inserting the same USB2.0 pen drive is detected
as a full-speed device, with USB1.1 transfer speeds.
Same behaviour with a USB2.0 Western Digital external 250GB harddisk.

Having only full-speed on an external 250GB harddisk isn't exactly
fun...

Some cut/paste of the kern.log file:
M10000, upon insertion of the pen drive:
---------------------------------------------------------------------
Jan 21 14:22:21 vanaalten kernel: usb 4-2: new high speed USB device
using ehci_hcd and address 3
Jan 21 14:22:21 vanaalten kernel: usb 4-2: configuration #1 chosen from
1 choice
Jan 21 14:22:21 vanaalten kernel: scsi1 : SCSI emulation for USB Mass
Storage devices
Jan 21 14:22:21 vanaalten kernel: usb-storage: device found at 3
Jan 21 14:22:21 vanaalten kernel: usb-storage: waiting for device to
settle before scanning
Jan 21 14:22:26 vanaalten kernel: scsi 1:0:0:0: Direct-Access Generic
USB Flash Disk 2.00 PQ: 0 ANSI: 2
Jan 21 14:22:28 vanaalten kernel: ready
Jan 21 14:22:28 vanaalten kernel: SCSI device sda: 255488 512-byte hdwr
sectors (131 MB)
---------------------------------------------------------------------

CN10000, upon insertion of the pen drive:
---------------------------------------------------------------------
Jan 21 12:04:36 vanaalten kernel: usb 1-1: new full speed USB device
using uhci_hcd and address 2
Jan 21 12:04:36 vanaalten kernel: usb 1-1: configuration #1 chosen from
1 choice
Jan 21 12:04:36 vanaalten kernel: scsi1 : SCSI emulation for USB Mass
Storage devices
Jan 21 12:04:36 vanaalten kernel: usb-storage: device found at 2
Jan 21 12:04:36 vanaalten kernel: usb-storage: waiting for device to
settle before scanning
Jan 21 12:04:41 vanaalten kernel: scsi 1:0:0:0: Direct-Access Generic
USB Flash Disk 2.00 PQ: 0 ANSI: 2
Jan 21 12:04:41 vanaalten kernel: SCSI device sdb: 255488 512-byte hdwr
sectors (131 MB)
---------------------------------------------------------------------

So the CN10000 isn't using ehci_hcd, which it should for USB2.0.

Something I noticed when I was removing/inserting modules using modconf
in kern.log:
---------------------------------------------------------------------
Jan 21 14:33:06 vanaalten kernel: ehci_hcd 0000:00:10.4: EHCI Host
Controller
Jan 21 14:33:06 vanaalten kernel: ehci_hcd 0000:00:10.4: new USB bus
registered, assigned bus number 5
Jan 21 14:33:06 vanaalten kernel: ehci_hcd 0000:00:10.4: can't setup
Jan 21 14:33:06 vanaalten kernel: ehci_hcd 0000:00:10.4: USB bus 5
deregistered
Jan 21 14:33:06 vanaalten kernel: ACPI: PCI interrupt for device
0000:00:10.4 disabled
Jan 21 14:33:06 vanaalten kernel: ehci_hcd 0000:00:10.4: init
0000:00:10.4 fail, -110
Jan 21 14:33:06 vanaalten kernel: ehci_hcd: probe of 0000:00:10.4 failed
with error -110
---------------------------------------------------------------------


So it looks like ehci_hcd isn't loaded correctly on my CN10000 system.

I've also compiled the latest available kernel: 2.6.20-rc5. Exactly the
same problem (but I got additional iptables problems so I went back to
2.6.19.2).

Any suggestions how to solve this problem? Additional information
needed? How should I proceed?

Thanks,
Matthijs


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