[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
** Tags added: ubuntu-certified ** Tags added: cscc -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
** This bug is no longer a duplicate of bug 847001 Adjusting display brightness is very slow on several Dell laptops -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
*** 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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
same problem on Olivetti Olibook S1530 Intel HD 3000 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
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 official Ubuntu documentation: Ubuntu Bug Control and Ubuntu Bug Squad: https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue Ubuntu Kernel Team: https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Filing_Kernel_Bug_reports Ubuntu Community: https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette When opening up the new report, please feel free to subscribe me to it. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
Marc Legris - https://launchpad.net/~maaarc-deactivatedaccount- deactivatedaccount ** Changed in: linux (Ubuntu) Status: Confirmed = Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
** Changed in: linux (Ubuntu) Assignee: Li Li (lli5) = (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
Isn't that same as https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
Sorry... https://bugs.launchpad.net/ubuntu/+source/gnome-power- manager/+bug/847001 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
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_display.c
+++ b/src/intel_display.c
@@ -126,9 +126,9 @@ static const char *backlight_interfaces[] = {
fujitsu-laptop,
sony,
samsung,
+ intel_backlight,
acpi_video1, /* finally fallback to the generic acpi drivers */
acpi_video0,
- intel_backlight,
NULL,
};
/*
--
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Title:
[Latitude E6220/E6420] Brightness hotkeys are sluggish
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[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
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, as it is kind of unusable through auto-brightness adjustment (or can you switch that off?). Rgds, Chris -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
BTW: I tried latest xorg (from xorg-edgers) and latest kernel 3.1.0-rc4. Bios is A05. Chris -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
** Changed in: linux (Ubuntu) Assignee: Chris Van Hoof (vanhoof) = Li Li (lli5) ** Changed in: linux (Ubuntu) Importance: Undecided = Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
** Changed in: linux (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 828296] Re: [Latitude E6220/E6420] Brightness hotkeys are sluggish
** Summary changed: - [Latitude E6220] Brightness hotkeys are sluggish + [Latitude E6220/E6420] Brightness hotkeys are sluggish -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/828296 Title: [Latitude E6220/E6420] Brightness hotkeys are sluggish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/828296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
