** Attachment added: "dmidecode"
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1775065/+attachment/5148734/+files/dmidecode
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** Attachment added: "fwts method"
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1775065/+attachment/5148733/+files/fwts%20method
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Public bug reported:
This is a case of "Backlight control does not work, and there are no
entries in /sys/class/backlight" for what lspci reports as "NVIDIA
Corporation GP106M [GeForce GTX 1060 Mobile] (rev a1)" where the kernel
parameter acpi_osi= is a workaround. (The workaround is also
** Attachment added: "grep -r . proc-acpi"
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1775065/+attachment/5148730/+files/grep%20-r%20.%20proc-acpi
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** Attachment added: "dsdt.dsl"
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1775065/+attachment/5148731/+files/dsdt.dsl
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** Attachment added: "fwts"
https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1775065/+attachment/5148732/+files/fwts
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Although step 3 at https://wiki.ubuntu.com/Kernel/Debugging/Backlight
asks for the output of ls /sys/class/backlight, it gives no output, so I
do not include an attachment. Steps 9, 10, and 12–16 either cause no
changes or do not apply. Step 11, as noted, is a workaround.
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Yes, this was after an upgrade to Ubuntu 18.04 LTS (Bionic Beaver) from
Ubuntu 17.10.1 (Artful Aardvark).
I will test with the latest upstream kernel.
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149048/+files/ProcModules.txt
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apport information
** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149049/+files/PulseList.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149051/+files/UdevDb.txt
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apport information
** Attachment added: "RfKill.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149050/+files/RfKill.txt
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apport information
** Attachment added: "IwConfig.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149043/+files/IwConfig.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149042/+files/CurrentDmesg.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149044/+files/Lspci.txt
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https://bugs.launchpad.net/bugs/1775065
apport information
** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149041/+files/CRDA.txt
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https://bugs.launchpad.net/bugs/1775065
apport information
** Attachment added: "AlsaInfo.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149040/+files/AlsaInfo.txt
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Yes, this was after an upgrade to Ubuntu 18.04 LTS (Bionic Beaver) from
Ubuntu 17.10.1 (Artful Aardvark).
The bug is fixed in the mainline kernel; I have added the appropriate
tag and marked the bug as confirmed.
** Tags added: kernel-fixed-upstream
** Changed in: linux (Ubuntu)
Status:
apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149052/+files/WifiSyslog.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149047/+files/ProcInterrupts.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149045/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1775065/+attachment/5149046/+files/ProcCpuinfoMinimal.txt
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