On 07/31/2013 08:01 AM, Rafael J. Wysocki wrote:
> On Thursday, July 18, 2013 02:16:09 AM Rafael J. Wysocki wrote:
>> On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
>>> Windows 8 introduced new policy for backlight control by pushing it out to
>>> graphics drivers. This appears to have
On Wed, 2013-07-31 at 02:01 +0200, Rafael J. Wysocki wrote:
> On Thursday, July 18, 2013 02:16:09 AM Rafael J. Wysocki wrote:
> > On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
> > > Windows 8 introduced new policy for backlight control by pushing it out to
> > > graphics drivers. This
On 07/31/2013 08:01 AM, Rafael J. Wysocki wrote:
> On Thursday, July 18, 2013 02:16:09 AM Rafael J. Wysocki wrote:
>> On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
>>> Windows 8 introduced new policy for backlight control by pushing it out to
>>> graphics drivers. This appears to have
On Wed, 2013-07-31 at 02:01 +0200, Rafael J. Wysocki wrote:
> On Thursday, July 18, 2013 02:16:09 AM Rafael J. Wysocki wrote:
> > On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
> > > Windows 8 introduced new policy for backlight control by pushing it out to
> > > graphics drivers. This
On Thursday, July 18, 2013 02:16:09 AM Rafael J. Wysocki wrote:
> On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
> > Windows 8 introduced new policy for backlight control by pushing it out to
> > graphics drivers. This appears to have coincided with a range of vendors
> > adding Window
On Wed, 2013-07-31 at 02:01 +0200, Rafael J. Wysocki wrote:
> (3) Fix i915 backlight control issues for all systems known to have them
> (that may take a while) and flip the defailt for that option to set when
> we
> think we're ready.
Unfortunately I don't have any systems that reproduc
On Wed, 2013-07-31 at 02:01 +0200, Rafael J. Wysocki wrote:
> (3) Fix i915 backlight control issues for all systems known to have them
> (that may take a while) and flip the defailt for that option to set when
> we
> think we're ready.
Unfortunately I don't have any systems that reproduc
On Thursday, July 18, 2013 02:16:09 AM Rafael J. Wysocki wrote:
> On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
> > Windows 8 introduced new policy for backlight control by pushing it out to
> > graphics drivers. This appears to have coincided with a range of vendors
> > adding Window
On Wed, Jul 17, 2013 at 7:16 PM, Rafael J. Wysocki wrote:
> On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
>> Windows 8 introduced new policy for backlight control by pushing it out to
>> graphics drivers. This appears to have coincided with a range of vendors
>> adding Windows 8 chec
On Wed, Jul 17, 2013 at 7:16 PM, Rafael J. Wysocki wrote:
> On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
>> Windows 8 introduced new policy for backlight control by pushing it out to
>> graphics drivers. This appears to have coincided with a range of vendors
>> adding Windows 8 chec
On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
> Windows 8 introduced new policy for backlight control by pushing it out to
> graphics drivers. This appears to have coincided with a range of vendors
> adding Windows 8 checks to their backlight control code which trigger either
> awkwar
On mer., 2013-07-17 at 10:51 -0500, Felipe Contreras wrote:
> On Sat, Jun 22, 2013 at 4:46 PM, Yves-Alexis Perez wrote:
> > Before Linux support for acpi_osi("Windows 2012") (and when booting with
> > acpi_osi="!Windows 2012"), brightness keys were handled by the kernel
> > just fine, whether in c
On mer., 2013-07-17 at 10:51 -0500, Felipe Contreras wrote:
> On Sat, Jun 22, 2013 at 4:46 PM, Yves-Alexis Perez
> wrote:
> > Before Linux support for acpi_osi("Windows 2012") (and when booting with
> > acpi_osi="!Windows 2012"), brightness keys were handled by the kernel
> > just fine, whether i
On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
> Windows 8 introduced new policy for backlight control by pushing it out to
> graphics drivers. This appears to have coincided with a range of vendors
> adding Windows 8 checks to their backlight control code which trigger either
> awkwar
On Sat, Jun 22, 2013 at 4:46 PM, Yves-Alexis Perez wrote:
> On dim., 2013-06-09 at 19:01 -0400, Matthew Garrett wrote:
>> The first two patches in this series are picked from other patchesets aimed
>> at
>> solving similar problems. The last simply unregisters ACPI backlight control
>> on Windows
On Sat, Jun 22, 2013 at 4:46 PM, Yves-Alexis Perez wrote:
> On dim., 2013-06-09 at 19:01 -0400, Matthew Garrett wrote:
>> The first two patches in this series are picked from other patchesets aimed
>> at
>> solving similar problems. The last simply unregisters ACPI backlight control
>> on Windows
On mar., 2013-06-25 at 22:33 +0100, Matthew Garrett wrote:
> > I was referring to “standardize the behaviour by leaving up to
> > userspace”. A lot of thinkpads (for example) (all the pre-windows 8
> > ones) have a perfectly working ACPI backlight interface.
>
> And this patchset won't alter their
On mar., 2013-06-25 at 22:14 +0100, Matthew Garrett wrote:
> On Tue, Jun 25, 2013 at 11:10:11PM +0200, Yves-Alexis Perez wrote:
> > On mar., 2013-06-25 at 21:54 +0100, Matthew Garrett wrote:
> > > I agree, we should standardise the behaviour. And the only way we can
> > > standardise the behaviour
On mar., 2013-06-25 at 21:54 +0100, Matthew Garrett wrote:
> On Tue, Jun 25, 2013 at 10:43:57PM +0200, Yves-Alexis Perez wrote:
> > On mar., 2013-06-25 at 17:08 +0100, Matthew Garrett wrote:
> > > Right, the kernel has special-casing to hook the backlight keys up to
> > > the ACPI backlight contro
On mar., 2013-06-25 at 17:08 +0100, Matthew Garrett wrote:
> On Sat, Jun 22, 2013 at 11:46:39PM +0200, Yves-Alexis Perez wrote:
>
> > Before Linux support for acpi_osi("Windows 2012") (and when booting with
> > acpi_osi="!Windows 2012"), brightness keys were handled by the kernel
> > just fine, wh
On mar., 2013-06-25 at 22:33 +0100, Matthew Garrett wrote:
> > I was referring to ?standardize the behaviour by leaving up to
> > userspace?. A lot of thinkpads (for example) (all the pre-windows 8
> > ones) have a perfectly working ACPI backlight interface.
>
> And this patchset won't alter their
On mar., 2013-06-25 at 22:14 +0100, Matthew Garrett wrote:
> On Tue, Jun 25, 2013 at 11:10:11PM +0200, Yves-Alexis Perez wrote:
> > On mar., 2013-06-25 at 21:54 +0100, Matthew Garrett wrote:
> > > I agree, we should standardise the behaviour. And the only way we can
> > > standardise the behaviour
On mar., 2013-06-25 at 21:54 +0100, Matthew Garrett wrote:
> On Tue, Jun 25, 2013 at 10:43:57PM +0200, Yves-Alexis Perez wrote:
> > On mar., 2013-06-25 at 17:08 +0100, Matthew Garrett wrote:
> > > Right, the kernel has special-casing to hook the backlight keys up to
> > > the ACPI backlight contro
On Tue, Jun 25, 2013 at 11:46:01PM +0200, Yves-Alexis Perez wrote:
> But if that introduce regressions, shouldn't workarounds be found then?
> Sorry if I keep repeating that but brightness keys handling in-kernel is
> quite a useful feature and losing it (because of the ?behave exactly
> like Windo
On mar., 2013-06-25 at 17:08 +0100, Matthew Garrett wrote:
> On Sat, Jun 22, 2013 at 11:46:39PM +0200, Yves-Alexis Perez wrote:
>
> > Before Linux support for acpi_osi("Windows 2012") (and when booting with
> > acpi_osi="!Windows 2012"), brightness keys were handled by the kernel
> > just fine, wh
On Tue, Jun 25, 2013 at 11:30:37PM +0200, Yves-Alexis Perez wrote:
> On mar., 2013-06-25 at 22:14 +0100, Matthew Garrett wrote:
> > Which, as we've already established, you don't - Lenovo broke it. Your
> > Thinkpad claims to have 100 available levels, and most of them don't
> > work. The kernel
On Tue, Jun 25, 2013 at 11:10:11PM +0200, Yves-Alexis Perez wrote:
> On mar., 2013-06-25 at 21:54 +0100, Matthew Garrett wrote:
> > I agree, we should standardise the behaviour. And the only way we can
> > standardise the behaviour is to leave it up to userspace.
> >
> It's pretty clear we disagr
On Tue, Jun 25, 2013 at 10:43:57PM +0200, Yves-Alexis Perez wrote:
> On mar., 2013-06-25 at 17:08 +0100, Matthew Garrett wrote:
> > Right, the kernel has special-casing to hook the backlight keys up to
> > the ACPI backlight control. This is an awful thing, because there's no
> > way to detect th
On Tue, Jun 25, 2013 at 6:08 PM, Matthew Garrett wrote:
> On Sat, Jun 22, 2013 at 11:46:39PM +0200, Yves-Alexis Perez wrote:
>
>> Before Linux support for acpi_osi("Windows 2012") (and when booting with
>> acpi_osi="!Windows 2012"), brightness keys were handled by the kernel
>> just fine, whether
On Tue, Jun 25, 2013 at 06:10:35PM +0200, Daniel Vetter wrote:
> Do we have any chances to amend this mistake by (gradually) phasing
> out support for the direct keypress forwarding in ACPI? Or at least
> some plans?
We could make the default value of brightness_switch_enabled a config
variable
On Sat, Jun 22, 2013 at 11:46:39PM +0200, Yves-Alexis Perez wrote:
> Before Linux support for acpi_osi("Windows 2012") (and when booting with
> acpi_osi="!Windows 2012"), brightness keys were handled by the kernel
> just fine, whether in console, in the display manager or in my desktop
> environme
On Tue, Jun 25, 2013 at 11:46:01PM +0200, Yves-Alexis Perez wrote:
> But if that introduce regressions, shouldn't workarounds be found then?
> Sorry if I keep repeating that but brightness keys handling in-kernel is
> quite a useful feature and losing it (because of the “behave exactly
> like Windo
On Tue, Jun 25, 2013 at 11:30:37PM +0200, Yves-Alexis Perez wrote:
> On mar., 2013-06-25 at 22:14 +0100, Matthew Garrett wrote:
> > Which, as we've already established, you don't - Lenovo broke it. Your
> > Thinkpad claims to have 100 available levels, and most of them don't
> > work. The kernel
On Tue, Jun 25, 2013 at 11:10:11PM +0200, Yves-Alexis Perez wrote:
> On mar., 2013-06-25 at 21:54 +0100, Matthew Garrett wrote:
> > I agree, we should standardise the behaviour. And the only way we can
> > standardise the behaviour is to leave it up to userspace.
> >
> It's pretty clear we disagr
On Tue, Jun 25, 2013 at 10:43:57PM +0200, Yves-Alexis Perez wrote:
> On mar., 2013-06-25 at 17:08 +0100, Matthew Garrett wrote:
> > Right, the kernel has special-casing to hook the backlight keys up to
> > the ACPI backlight control. This is an awful thing, because there's no
> > way to detect th
On Tue, Jun 25, 2013 at 06:10:35PM +0200, Daniel Vetter wrote:
> Do we have any chances to amend this mistake by (gradually) phasing
> out support for the direct keypress forwarding in ACPI? Or at least
> some plans?
We could make the default value of brightness_switch_enabled a config
variable
On Tue, Jun 25, 2013 at 6:08 PM, Matthew Garrett wrote:
> On Sat, Jun 22, 2013 at 11:46:39PM +0200, Yves-Alexis Perez wrote:
>
>> Before Linux support for acpi_osi("Windows 2012") (and when booting with
>> acpi_osi="!Windows 2012"), brightness keys were handled by the kernel
>> just fine, whether
On Sat, Jun 22, 2013 at 11:46:39PM +0200, Yves-Alexis Perez wrote:
> Before Linux support for acpi_osi("Windows 2012") (and when booting with
> acpi_osi="!Windows 2012"), brightness keys were handled by the kernel
> just fine, whether in console, in the display manager or in my desktop
> environme
On dim., 2013-06-09 at 19:01 -0400, Matthew Garrett wrote:
> The first two patches in this series are picked from other patchesets aimed at
> solving similar problems. The last simply unregisters ACPI backlight control
> on Windows 8 systems when using an Intel GPU. Similar code could be added to
>
On dim., 2013-06-09 at 19:01 -0400, Matthew Garrett wrote:
> The first two patches in this series are picked from other patchesets aimed at
> solving similar problems. The last simply unregisters ACPI backlight control
> on Windows 8 systems when using an Intel GPU. Similar code could be added to
>
On Sun, Jun 09, 2013 at 07:01:36PM -0400, Matthew Garrett wrote:
> Windows 8 introduced new policy for backlight control by pushing it out to
> graphics drivers. This appears to have coincided with a range of vendors
> adding Windows 8 checks to their backlight control code which trigger either
> a
On Sun, Jun 09, 2013 at 07:01:36PM -0400, Matthew Garrett wrote:
> Windows 8 introduced new policy for backlight control by pushing it out to
> graphics drivers. This appears to have coincided with a range of vendors
> adding Windows 8 checks to their backlight control code which trigger either
> a
On Mon, 2013-06-10 at 13:59 +0200, Rafael J. Wysocki wrote:
> I happen to know that alternative solution to this problem is being worked on,
> so I'm going to wait until it is submitted and then we'll decide what to
> merge.
Sure.
> I'm slightly concerned about unregistering ACPI backlight cont
Hi Matthew,
On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
> Windows 8 introduced new policy for backlight control by pushing it out to
> graphics drivers. This appears to have coincided with a range of vendors
> adding Windows 8 checks to their backlight control code which trigger ei
On Mon, 2013-06-10 at 13:59 +0200, Rafael J. Wysocki wrote:
> I happen to know that alternative solution to this problem is being worked on,
> so I'm going to wait until it is submitted and then we'll decide what to
> merge.
Sure.
> I'm slightly concerned about unregistering ACPI backlight cont
Hi Matthew,
On Sunday, June 09, 2013 07:01:36 PM Matthew Garrett wrote:
> Windows 8 introduced new policy for backlight control by pushing it out to
> graphics drivers. This appears to have coincided with a range of vendors
> adding Windows 8 checks to their backlight control code which trigger ei
Windows 8 introduced new policy for backlight control by pushing it out to
graphics drivers. This appears to have coincided with a range of vendors
adding Windows 8 checks to their backlight control code which trigger either
awkward behaviour (Lenovo) or complete brokenness (some Dells). The simple
Windows 8 introduced new policy for backlight control by pushing it out to
graphics drivers. This appears to have coincided with a range of vendors
adding Windows 8 checks to their backlight control code which trigger either
awkward behaviour (Lenovo) or complete brokenness (some Dells). The simple
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