Christopher,
I've applied the two patches mentioned in #24 onto kernel 3.13.0-38.65 sources.
The resulting kernel successfully fixes the issue on my hardware.
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Yes, I've personally tested that 3.17rc7 fixed the issue on my hardware.
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Title:
[Fujitsu AMILO Xi 2550] Backlight turned off since
Christopher, no need to reverse-bisect, I know exactly the two commits which
solve the problem :
http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-fixes-3.17&id=bc13018b5eba26ca229b33763c9e61fac31a1925
http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-fixes-3.17&id=8aff6ad5a393b8e2ad00dc
This bug is fixed upstream in 3.17rc7.
Is it possible to backport the fix to Trusty's kernel ?
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Title:
[Fujitsu AMILO Xi 2550] Backl
Link to dri-devel bugtracker :
https://bugs.freedesktop.org/show_bug.cgi?id=83460
** Bug watch added: freedesktop.org Bugzilla #83460
https://bugs.freedesktop.org/show_bug.cgi?id=83460
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The bug is not fixed in upstream kernel 3.17-rc3.
I have tested the kernel from
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-rc3-utopic/
** Tags added: kernel-bug-exists-upstream kernel-bug-exists-
upstream-3.17-rc3
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1364148/+attachment/4192729/+files/ProcEnviron.txt
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** Attachment added: "CRDA.txt"
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Ti
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https://bugs.launchpad.net/bugs/1364148/+attachment/4192731/+files/ProcModules.txt
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** Attachment added: "BootDmesg.txt"
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** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1364148/+attachment/4192736/+files/WifiSyslog.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Tags added: apport-collected trusty
** Description changed:
Since the upgrade to kernel 3.13.0-35 (from 3.13.0-34), the screen is very
dark to the point it's unusable.
Backlight seems completely turned off. Using the brightness keys doesn't help.
It was working fine
apport information
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https://bugs.launchpad.net/bugs/1364148/+attachment/4192735/+files/UdevLog.txt
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** Attachment added: "CurrentDmesg.txt"
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** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1364148/+attachment/4192734/+files/UdevDb.txt
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** Attachment added: "Lsusb.txt"
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Public bug reported:
Since the upgrade to kernel 3.13.0-35 (from 3.13.0-34), the screen is very dark
to the point it's unusable.
Backlight seems completely turned off. Using the brightness keys doesn't help.
It was working fine with 3.13.0-34.
I found that the offending patch is "drm/radeon: set
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