** Tags added: ubuntu-certified
** Tags added: cscc
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https://bugs.launchpad.net/bugs/828296
Title:
[Latitude E6220/E6420] Brightness hotkeys are sluggish
To manage notifications about
** This bug is no longer a duplicate of bug 847001
Adjusting display brightness is very slow on several Dell laptops
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https://bugs.launchpad.net/bugs/828296
Title:
[Latitude E6220/E6
*** This bug is a duplicate of bug 847001 ***
https://bugs.launchpad.net/bugs/847001
** This bug has been marked a duplicate of bug 847001
Adjusting display brightness is very slow on several Dell laptops
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Mario, thank you for your comment. So your hardware and problem may be tracked,
could you please file a new report with Ubuntu by executing the following in a
terminal while booted into a Ubuntu repository kernel (not a mainline one) via:
ubuntu-bug linux
For more on this, please read the offici
same problem on Olivetti Olibook S1530
Intel HD 3000
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Title:
[Latitude E6220/E6420] Brightness hotkeys are sluggish
To manage notifications abou
Marc Legris -> https://launchpad.net/~maaarc-deactivatedaccount-
deactivatedaccount
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/8282
** Changed in: linux (Ubuntu)
Assignee: Li Li (lli5) => (unassigned)
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Title:
[Latitude E6220/E6420] Brightness hotkeys are sluggish
To manag
Sorry... https://bugs.launchpad.net/ubuntu/+source/gnome-power-
manager/+bug/847001
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Title:
[Latitude E6220/E6420] Brightness hotkeys are sluggish
Isn't that same as
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296
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Title:
[Latitude E6220/E6420] Brightness hotkeys are sluggish
To
Possible workaround: add acpi_backlight=vendor to the kernel params
(GRUB_CMDLINE_LINUX_DEFAULT in /etc/grub/default then sudo update-grub).
Then the xorg driver also picks the intel_backlight.
Chris
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Looks like the xf86-video-intel driver chooses the acpi_video0 driver
[ 5632.883] (II) intel(0): found backlight control interface
/sys/class/backlight/acpi_video0
I have impression that changing the xf86 driver to take the
intel_backlight it works better.
Rgds,
Chris
--- a/src/intel_displa
** Changed in: linux (Ubuntu)
Assignee: Chris Van Hoof (vanhoof) => Li Li (lli5)
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
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BTW: I tried latest xorg (from xorg-edgers) and latest kernel 3.1.0-rc4.
Bios is A05.
Chris
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Title:
[Latitude E6220/E6420] Brightness hotkeys are
Hi,
I also have latitude E6420. Changing brightness with the FN+Arrow Keys
is sluggish and when the automatic brightness adjustment kicks in, the
laptop is kind of unusable.
Setting the brightness with intel_backlight command is instantaneous
tough.
I wonder how this laptop got ubuntu certified,
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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Title:
[Latitude E6220/E6420] Brightness hotkeys are sluggish
To manage notificati
** Summary changed:
- [Latitude E6220] Brightness hotkeys are sluggish
+ [Latitude E6220/E6420] Brightness hotkeys are sluggish
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Title:
[Latitude
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