I can confirm the same kind of behavior on a ASMedia Technology Inc.
ASM2142/ASM3142 USB 3.1 Host Controller.
It has been plaguing me for years, xhci_hcd seems broken when using USB
hubs such as the one used by the Valve Index (VR headset). I have to
use my reset_usb script once in a while to reb
That new file could be added to the thin-provisioning-tools which would
trigger an initramfs update.
I forgot to remove cache_dump, cache_restore and cache_metadata_size
which are not needed to boot.
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After making my system work again, which took a while since most live
media and even the installer don't support LVM cache, I had it working
for writeback on my system with the following.
/etc/initramfs-tools/hooks/lvm2_cache
{{{
#!/bin/sh
PREREQ="lvm2"
prereqs()
{
echo "$PREREQ"
}
case $1
I am currently running 4.2-rc3, I tested with acpi_osi= and backlight
control work, however, if I remove the workaround from GRUB command line
on boot, backlight keys stop working.
** Tags added: kernel-bug-exists-upstream-4.2-rc3
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It now works on Ubuntu Vivid only if «acpi_osi=» is added to GRUB.
** Tags added: apport-collected vivid
** Description changed:
Backlight keys are not working when logged in the desktop, using
/sys/class/backlight/intel_backlight/brightness can adjust the
brightness.
Usual workaround
Public bug reported:
Step to reproduce:
1. Create a VG with 2 disks.
2. Use lvcreate -m1 --mirrorlog mirrored -L 512M -n test vgTest
3. Use mkfs on the volume
4. Write some file and unplug one disk.
5. Unplug the other disk.
6. umount device, force removal using dmsetup remove -f on stuck devices.
** Attachment removed: "fwts"
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** Atta
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** Attachment added: "backlight"
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** Attachment added: "acpi"
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Public bug reported:
Backlight keys are not working when logged in the desktop, using
/sys/class/backlight/intel_backlight/brightness can adjust the
brightness.
Usual workarounds listed in
https://wiki.ubuntu.com/Kernel/Debugging/Backlight are not working.
ProblemType: Bug
DistroRelease: Ubuntu
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