Red Hat Bugzilla – Bug 106422
Slow thoughtput with Flash Drive on Dell Optiplex GX240 under RH9.0
Last modified: 2007-04-18 12:58:11 EDT
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Description of problem:
I have a Transend Flash Drive that is presenting problems with later Linux kernels.
NOTE: This problem _only_ occurs on a Dell Optiplex GX240 system I use at work.
My system at home (not a Dell) has no problems with any kernel revision - up to,
and including, 2.6.0-test6. Neither does the problem occur on an older Dell
Optiplex GX110 - running vanilla RH9.0.
The device operates perfectly under the kernel distributed with RedHat8.0
(2.4.18-14) but has problems with all later kernels - including the one in RH9.0
(2.4.20-8). In the past I have installed RH9.0 and run into this problem and I
have reverted to RH8.0 so the information below is obtained from a
"roll-your-own" version of the 2.4.22 kernel.
The problem is one of _very_ slow throughput to the device - up to 10 seconds to
get output from an ls -l /mnt/flash. I suspect that this may, in some way, be
connected with the fact the the drive is not recognised at boot time.
I have tried both UHCI drivers. With the usb-uhci driver the USB buses are
recognised at boot time but the Flash Drive is not. With the uchi driver, the
USB buses are _not_ recognised at boot time - however manually loading the
modules overcomes this. With _both_ drivers, the slow throughput problem is evident.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Just attach the device and do a "mount /dev/sda1 /mnt/flash" - this will take a
long time. As will a subsequent "ls -l /mnt/flash"
Created attachment 94967 [details]
System information and log file extract
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem
The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases,
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/