I have done several tests with various kernels in an attempt to get full
USB 3 external hard drives to work.
Here are the results.
Using sl6rolling, 2.6.32-131.0.15.el6.x86_64 , USB 3 is not working.
Although this kernel is that of RHEL 6.1 in which there is supposed to
be full USB 3 support, no go.
Following a suggestion from Connie Sieh, I installed the Fedora 15 kernel,
2.6.38.6-26.rc1.fc15.x86_64
This has fully working USB 3, same as I observed in OpenSUSE , evidence
below.
To get the Fedora 15 kernel to work, I needed to install the Fedora 15
linux firmware RPM. Before doing so, as root, I did mv /lib/firmware
/lib/firmware-SL6 . For a reason to be explained below, I have now
rebooted the system into the latest production SL 6 kernel but still
using the Fedora 15 firmware, and this does seem to work -- kernel
2.6.32-131.2.1.el6.x86_64 .
The reason I switched back to no USB 3 support is that I could not build
the Nvidia drivers, needed for full CUDA support, because the Fedora 15
kernel demanded a later gcc than SL 6 uses. I am loathe to change gcc
because of the large number of dependencies upon the specific gcc used.
Hence, has anyone built the Nvidia packages
(NVIDIA-Linux-x86_64-270.41.19.run or later) for Fedora 15 kernel
2.6.38.6-26.rc1.fc15.x86_64 so that I could get the appropriate modules,
etc., and thus have full CUDA support?
Evidence that the Fedora 15 2.6.38.6-26.rc1.fc15.x86_64 kernel supports
USB 3:
Bus 008 Device 002: ID 152d:0551 JMicron Technology Corp. / JMicron USA
Technology Corp.
Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 002: ID 03f0:0317 Hewlett-Packard LaserJet 1200
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0424:2504 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Script started on Thu 07 Jul 2011 12:40:22 PM PDT
[root@jb344 ykarant]# fdisk /dev/sde
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): p
Disk /dev/sde: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x706a2c16
Device Boot Start End Blocks Id System
/dev/sde1 * 1 32 257008+ 83 Linux
/dev/sde2 33 12780 102398310 83 Linux
/dev/sde3 12781 25528 102398310 83 Linux
/dev/sde4 25529 77825 420075652+ 5 Extended
/dev/sde5 25529 38276 102398278+ 83 Linux
/dev/sde6 38277 43375 40957686 83 Linux
/dev/sde7 43376 48474 40957686 83 Linux
/dev/sde8 48475 53573 40957686 83 Linux
/dev/sde9 53574 58672 40957686 83 Linux
/dev/sde10 58673 58927 2048256 82 Linux swap / Solaris
/dev/sde11 58928 60801 15052873+ 83 Linux
/dev/sde12 60802 77825 136745248+ 83 Linux
Command (m for help): q
[root@jb344 ykarant]# exit
exit
Script done on Thu 07 Jul 2011 12:40:43 PM PDT
Yasha Karant
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