Just add the acpi_backlight=vendor (grub) and put in
/etc/X11/xorg.conf.d/80-backlight.conf :
Section Device
Identifier Intel Graphics
Driver intel
Option Backlight intel_backlight # use your backlight that
works here
EndSection
ArchWiki:
Same: VMs with more than one disk still crash with out of memory. We're using
Hyper-V on Windows Server 2012 R2 (core) with GEN2 VMs (Ubuntu 16.04
LTS/Xenial, Kernel 4.4.0-112-generic). VMs with just one disk are running
perfectly.
Vss with 1disk ok
Vss with 2disk > freeze with out of
Public bug reported:
Hello,
In 16.04 lts (Ubuntu 4.4.0-134.160-generic 4.4.140) with all partitions
in ext4 with flag meta_bg :
kernel: [ 1905.799557] EXT4-fs (dm-7): ext4_check_descriptors: Block bitmap for
group 0 overlaps block group descriptors
kernel: [ 1905.799858] EXT4-fs (dm-7): group
Impacted also in 16.04 lts (kernel 4.4.0-134-generic ) with all
partitions in ext4 with flag meta_bg :
ext4_check_descriptors: block bitmap for group 0 overlaps block group
descriptors
the flag meta_bg activates automatically by warming up a partition above
60GB (with lvextend and resize2fs).
I opened another bug for the 16.04 because the cause is not the patch
CVE-2018-1093 :
1789653 : regression with EXT4 file systems and meta_bg flag
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-1093
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apport information
** Tags added: apport-collected
** Description changed:
Hello,
In 16.04 lts (Ubuntu 4.4.0-134.160-generic 4.4.140) with all partitions
in ext4 with flag meta_bg :
kernel: [ 1905.799557] EXT4-fs (dm-7): ext4_check_descriptors: Block bitmap
for group 0 overlaps
apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182309/+files/Lspci.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182312/+files/ProcInterrupts.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182313/+files/ProcModules.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182310/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182308/+files/CurrentDmesg.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182311/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "AudioDevicesInUse.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182322/+files/AudioDevicesInUse.txt
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apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182315/+files/WifiSyslog.txt
** Description changed:
Hello,
In 16.04 lts (Ubuntu 4.4.0-134.160-generic 4.4.140) with all partitions
in ext4 with flag meta_bg :
kernel:
apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182314/+files/UdevDb.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182326/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182327/+files/ProcInterrupts.txt
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apport information
** Attachment added: "HookError_generic.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182324/+files/HookError_generic.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182323/+files/CurrentDmesg.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182325/+files/Lspci.txt
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The kernel test resolves the bug.
The partition mount correctly at startup, I do not remain block at boot
(emergency mode).
Only difference, I'm with a minimal kernel
(linux-image-virtual/linux-headers-virtual).
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** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182328/+files/ProcModules.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1789653/+attachment/5182329/+files/UdevDb.txt
** Changed in: linux (Ubuntu)
Status: In Progress => Confirmed
** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Confirmed
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