V2 still not working, if this fix applies to bug 1250401, I think you
have the hardware.
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https://bugs.launchpad.net/bugs/1333638
Title:
[Dell Vostro 5470] Unable to control brightness
Backlight control works with the kernel mentioned in #10.
But backlight dims slowly.
System has same behavior on 3.16-r3
Suspect that dim behavior is the hardware/BIOS issue.
I will submit a sauce patch for Dell Inspiron 5547/5447/5737 and Vostro
5470.
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Verified with 14.04 stock image on this system again (in both UEFI / legacy
mode), just like what Edward commented in comment #12, it dims slowly with both
of the Intel and nVidia GPU.
Therefore I will mark this bug as Invalid.
Thanks!
** Changed in: hwe-next/trusty
Status: New = Invalid
** Also affects: hwe-next/trusty
Importance: Undecided
Status: New
** Also affects: hwe-next/utopic
Importance: Undecided
Status: New
** Changed in: hwe-next/utopic
Status: New = Invalid
** Changed in: hwe-next/trusty
Assignee: (unassigned) = Edward Lin (airken)
Test with kernel provided in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1332437/comments/11,
backlight control still not working with the Intel GPU / nVidia GPU.
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@Po-Hsu,
Fix some mistakes in previous release, please try following release.
Thanks.
http://people.canonical.com/~airken/bug/lp1332437/v2/
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** Also affects: hwe-next
Importance: Undecided
Status: New
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Title:
[Dell Vostro 5470] Unable to control brightness with the Intel GPU
** Changed in: linux (Ubuntu)
Assignee: Anthony Wong (anthonywong) = Edward Lin (airken)
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Title:
[Dell Vostro 5470] Unable to control
Duplicate bug of bug 1332437
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Title:
[Dell Vostro 5470] Unable to control brightness with the Intel GPU /
nVidia GPU + proprietary driver
To
The brightness control still not working with the proprietary driver installed.
ubuntu@201307-14038:/sys/devices/pnp0$ /usr/lib/nux/unity_support_test -c -p
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce GT 740M/PCIe/SSE2
OpenGL version string: 4.4.0 NVIDIA 331.38
Not
Just like bug 1332437, brightness control with the proprietary driver could
work with the latest daily-live kernel
Also, it works with the driver removed (running the Intel GPU)
ubuntu@201307-14038:~$ uname -a
Linux 201307-14038 3.16.0-999-generic #201406240316 SMP Tue Jun 24 07:18:08 UTC
2014
** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
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Title:
[Dell Vostro 5470] Unable to control brightness with the Intel GPU /
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