Ubuntu 7.04/Issues/USB-SATA race condition causes hang
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< Ubuntu 7.04(Difference between revisions)
| Line 2: | Line 2: | ||
<br>'''Systems Affected:''' Dimension 530n. | <br>'''Systems Affected:''' Dimension 530n. | ||
<br>'''Impact:''' Systems hangs during boot up. | <br>'''Impact:''' Systems hangs during boot up. | ||
| - | <br>'''Workaround:''' Force | + | <br>'''Workaround:''' Force SATA driver to load before USB driver. Create a script named load_ata_piix in /usr/share/initramfs-tools/scripts/init-top/ with the following contents: |
#!/bin/sh | #!/bin/sh | ||
| - | |||
PREREQ="" | PREREQ="" | ||
prereqs() | prereqs() | ||
| Line 20: | Line 19: | ||
modprobe -Qb ata_piix | modprobe -Qb ata_piix | ||
| - | + | Execute the script: | |
| - | $ | + | $ sudo /usr/share/initramfs-tools/scripts/init-top/load_ata_piix |
| - | + | Next, rebuild the initrd so that the kernel will probe for the SATA driver before the USB driver: | |
| - | + | $ sudo update-initramfs -u -k all | |
Latest revision as of 14:34, 1 November 2007
Description: USB device misreads interrupts intermittently due to race condition with ATA driver.
Systems Affected: Dimension 530n.
Impact: Systems hangs during boot up.
Workaround: Force SATA driver to load before USB driver. Create a script named load_ata_piix in /usr/share/initramfs-tools/scripts/init-top/ with the following contents:
#!/bin/sh
PREREQ=""
prereqs()
{
echo "$PREREQ"
}
case $1 in
# get pre-requisites
prereqs)
prereqs
exit 0
;;
esac
modprobe -Qb ata_piix
Execute the script:
$ sudo /usr/share/initramfs-tools/scripts/init-top/load_ata_piix
Next, rebuild the initrd so that the kernel will probe for the SATA driver before the USB driver:
$ sudo update-initramfs -u -k all
