Thanks for the response Alan. I downloaded/compiled 2.6.15 with appropriate
Debug Info, as you suggested. I am running a minimal linux system and do
not have dmesg output setup. However, I do have the Debug info provided
below. Again, here is the situation:
1) cold boot with USB key connected
2) after boot, cannot mount USB key partition sda1 (bash-prompt hangs if I
try)
3) remove the USB key, and then reconnect
4) now sda1 is mountable
------------------------------------------
DEBUG MESSAGES AFTER BOOT, WITHOUT ME DOING ANYTHING:
input: DualPoint Stick as /class/input/input1
input: AlpsPS/2 ALPS DualPoint TouchPad as /class/input/input2
Vendor: SanDissk Model: Cruzer Rev: 0.2
Type: Direct-Access ANSI SCSI revision: 02
SCSI device sda: 2001888 512-byte hdwr sectors (1025MB)
sda: Write Protect is off
sa: asuming drive cache: write through
sda:<7>usb-storage: queuecommand called
--------------------------------------------
AGAIN I HAVEN"T DONE ANYTHING, THIS BELOW MESSAGE IS OUTPUT APPROX. ONCE PER
MINUTE
usb 1-3: reset high speed USB device using ehci_hcd and address 2
------------------------------------------------------------------------------------
I REMOVE THE USB KEY FROM COMPUTER
usb 1-3: USB disconnect, address 2
sd 0:0:0:0: SCSI error: return code = 0x70000
end_request: I/O error, dev sda, sector 0
Buffer I/O error on device sda, logical block 0
sd 0:0:0:0: SCSI error: return code = 0x10000
end_request: I/O erro, dev sda, sector 0
Buffer I/O error on device sda, logical block 0
unable to read partition table
sd 0:0:0:0: Attached scsi removable disk sda
sd 0:0:0:0: Attached scsi generic sg0 type 0
-------------------------------------------------------------
INSERT USB KEY BACK INTO COMPUTER
usb 1-3: new high speed USB device using ehci_hcd and address 3
usb 1-3: Product: Cruzer Mini
usb 1-3: Manufacturer: SanDisk Corporation
usb 1-3: Serial Number: 200432348293e323dc
scsi1: SCSI emulation for USB Mass Storage devices
Vendor: SanDisk Model: Cruzer Mini Rev: 0.2
Type: Direct-Access ANSI SCSI revision: 02
SCSI device sda: 2001888 512-byte hdwr sectors (1025MB)
sda: Write Proctect is off
sda: assuming drive cache: write through
SCSI device sda: 2001888 512-byte hdwr sectors (1025MB)
sda: Write Proctect is off
sda: assuming drive cache: write through
sda:<7>usb-storage: queuecommand called
sda1 sda2
sd 1:0:0:0: Attached scsi removable disk sda
sd 1:0:0:0: Attached scsi generic sg0 type 0
I can now mount the partition.
Thanks again Alan.
From: Alan Stern <[EMAIL PROTECTED]>
To: M Dolan <[EMAIL PROTECTED]>
CC: [email protected]
Subject: Re: [Linux-usb-users] Forcing USB Disconnects
Date: Tue, 17 Jan 2006 10:27:16 -0500 (EST)
On Mon, 16 Jan 2006, M Dolan wrote:
> Hello,
>
> I've been trying to figure this problem out for a while, with no
success.
> I'm hoping someone here could help.
>
> Basically I am booting linux with a USB key connected to the USB port.
> After the system is booted, the USB key is not recognized (maybe it is,
but
> the system just hangs when I try to mount a partition on the key or
examine
> the key). However, if I simply remove the key from the computer and
then
> re-insert it (after boot completes), it is then recognized properly and
I
> can mount. For our application, however, we need the key recognized and
> usable on boot, without having to remove/re-insert.
>
> I have taken a look at dmesg, but this shows little. Is there a simple
way
> to solve this? I would think it boils down to a forced (emulated)
> disconnect/reconnect. Any help would be appreciated. Some of my specs
are
> below. Thank you.
> Mark
>
> computer: tried with many, IBM laptops, Dell, same problem
> kernel: linux 2.6.9
To start with, you should upgrade to 2.6.15.
More information is needed. Turn on the CONFIG_USB_DEBUG and
CONFIG_USB_STORAGE_DEBUG settings in the configuration and post the output
from dmesg.
Alan Stern
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