* Re: Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler"
[not found] <117469492.1598370.1372275060043.JavaMail.root@qzdev.se>
@ 2013-06-26 19:52 ` Rafael J. Wysocki
2013-06-26 20:05 ` Rafael J. Wysocki
0 siblings, 1 reply; 6+ messages in thread
From: Rafael J. Wysocki @ 2013-06-26 19:52 UTC (permalink / raw)
To: Cork; +Cc: linux-acpi, Aaron Lu
On Wednesday, June 26, 2013 07:31:00 PM Cork wrote:
> Hello. This is my first time sending a report like this, so please excuse me if I'm missing some vital information.
>
> From updating the kernel in Arch linux to 3.9 the brightness controls stopped working on my Clevo P0150HM. I have tried the acpi_backlight=vendor boot parameter but it makes no difference.
>
> While researching this problem I've found that /sys/class/backlight is empty in the versions where the buttons isn't working. Bisecting points to 00c43b9682507dc622c03172fde1032e2a216e9d [1] as the first commit showing the symptoms.
>
> Attached is the output from journalctl -b _TRANSFORM=kernel for the two versions. Not sure what other useful information I can provide apart from that, so please direct me if there is something missing.
>
> [1] https://github.com/torvalds/linux/commit/00c43b9682507dc622c03172fde1032e2a216e9d
Interesting.
Please send the output of acpidump from your machine.
Thanks,
Rafael
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler"
2013-06-26 19:52 ` Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler" Rafael J. Wysocki
@ 2013-06-26 20:05 ` Rafael J. Wysocki
[not found] ` <450286594.1598749.1372279129153.JavaMail.root@qzdev.se>
0 siblings, 1 reply; 6+ messages in thread
From: Rafael J. Wysocki @ 2013-06-26 20:05 UTC (permalink / raw)
To: Cork; +Cc: linux-acpi, Aaron Lu
On Wednesday, June 26, 2013 09:52:46 PM Rafael J. Wysocki wrote:
> On Wednesday, June 26, 2013 07:31:00 PM Cork wrote:
> > Hello. This is my first time sending a report like this, so please excuse me if I'm missing some vital information.
> >
> > From updating the kernel in Arch linux to 3.9 the brightness controls stopped working on my Clevo P0150HM. I have tried the acpi_backlight=vendor boot parameter but it makes no difference.
> >
> > While researching this problem I've found that /sys/class/backlight is empty in the versions where the buttons isn't working. Bisecting points to 00c43b9682507dc622c03172fde1032e2a216e9d [1] as the first commit showing the symptoms.
> >
> > Attached is the output from journalctl -b _TRANSFORM=kernel for the two versions. Not sure what other useful information I can provide apart from that, so please direct me if there is something missing.
> >
> > [1] https://github.com/torvalds/linux/commit/00c43b9682507dc622c03172fde1032e2a216e9d
>
> Interesting.
>
> Please send the output of acpidump from your machine.
Also please put initcall_debug into the kernel command line and send dmesg from
the working and not working kernels with that.
Thanks,
Rafael
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler"
[not found] ` <450286594.1598749.1372279129153.JavaMail.root@qzdev.se>
@ 2013-06-26 22:08 ` Rafael J. Wysocki
2013-06-27 1:38 ` Aaron Lu
0 siblings, 1 reply; 6+ messages in thread
From: Rafael J. Wysocki @ 2013-06-26 22:08 UTC (permalink / raw)
To: Cork; +Cc: linux-acpi, Aaron Lu
On Wednesday, June 26, 2013 08:38:49 PM Cork wrote:
> // Cork
OK, thanks.
The initialization ordering obviously changed in 3.9 and the ACPI video
driver fails to find your backlight device.
Can you please tell me what the output of
$ find /sys/devices/ -name LNXVIDEO\*
is on your system in 3.9 and 3.8?
Rafael
>
> ----- Original Message -----
> > From: "Rafael J. Wysocki" <rjw@sisk.pl>
> > To: "Cork" <kernel@box.qzdev.se>
> > Cc: linux-acpi@vger.kernel.org, "Aaron Lu" <aaron.lu@intel.com>
> > Sent: Wednesday, 26 June, 2013 10:05:38 PM
> > Subject: Re: Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler"
> >
> > On Wednesday, June 26, 2013 09:52:46 PM Rafael J. Wysocki wrote:
> > > On Wednesday, June 26, 2013 07:31:00 PM Cork wrote:
> > > > Hello. This is my first time sending a report like this, so
> > > > please excuse me if I'm missing some vital information.
> > > >
> > > > From updating the kernel in Arch linux to 3.9 the brightness
> > > > controls stopped working on my Clevo P0150HM. I have tried the
> > > > acpi_backlight=vendor boot parameter but it makes no difference.
> > > >
> > > > While researching this problem I've found that
> > > > /sys/class/backlight is empty in the versions where the buttons
> > > > isn't working. Bisecting points to
> > > > 00c43b9682507dc622c03172fde1032e2a216e9d [1] as the first commit
> > > > showing the symptoms.
> > > >
> > > > Attached is the output from journalctl -b _TRANSFORM=kernel for
> > > > the two versions. Not sure what other useful information I can
> > > > provide apart from that, so please direct me if there is
> > > > something missing.
> > > >
> > > > [1]
> > > > https://github.com/torvalds/linux/commit/00c43b9682507dc622c03172fde1032e2a216e9d
> > >
> > > Interesting.
> > >
> > > Please send the output of acpidump from your machine.
> >
> > Also please put initcall_debug into the kernel command line and send
> > dmesg from
> > the working and not working kernels with that.
> >
> > Thanks,
> > Rafael
> >
> >
> > --
> > I speak only for myself.
> > Rafael J. Wysocki, Intel Open Source Technology Center.
> >
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler"
2013-06-26 22:08 ` Rafael J. Wysocki
@ 2013-06-27 1:38 ` Aaron Lu
2013-06-27 5:40 ` Cork
0 siblings, 1 reply; 6+ messages in thread
From: Aaron Lu @ 2013-06-27 1:38 UTC (permalink / raw)
To: Rafael J. Wysocki, Cork; +Cc: linux-acpi
On 06/27/2013 06:08 AM, Rafael J. Wysocki wrote:
> On Wednesday, June 26, 2013 08:38:49 PM Cork wrote:
>> // Cork
>
> OK, thanks.
>
> The initialization ordering obviously changed in 3.9 and the ACPI video
> driver fails to find your backlight device.
>
> Can you please tell me what the output of
>
> $ find /sys/devices/ -name LNXVIDEO\*
>
> is on your system in 3.9 and 3.8?
This should be the same problem as bug 58091, where one of the reporter
is using a similar system Clevo_P150HMx. And I've checked the ACPI dump
of Cork's system, there is also a _ROM method under PCI0.
Cork,
Possible to test v3.10-rc6 or later kernels? There is a fix for your
problem, thanks.
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=58091
-Aaron
>
> Rafael
>
>
>>
>> ----- Original Message -----
>>> From: "Rafael J. Wysocki" <rjw@sisk.pl>
>>> To: "Cork" <kernel@box.qzdev.se>
>>> Cc: linux-acpi@vger.kernel.org, "Aaron Lu" <aaron.lu@intel.com>
>>> Sent: Wednesday, 26 June, 2013 10:05:38 PM
>>> Subject: Re: Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler"
>>>
>>> On Wednesday, June 26, 2013 09:52:46 PM Rafael J. Wysocki wrote:
>>>> On Wednesday, June 26, 2013 07:31:00 PM Cork wrote:
>>>>> Hello. This is my first time sending a report like this, so
>>>>> please excuse me if I'm missing some vital information.
>>>>>
>>>>> From updating the kernel in Arch linux to 3.9 the brightness
>>>>> controls stopped working on my Clevo P0150HM. I have tried the
>>>>> acpi_backlight=vendor boot parameter but it makes no difference.
>>>>>
>>>>> While researching this problem I've found that
>>>>> /sys/class/backlight is empty in the versions where the buttons
>>>>> isn't working. Bisecting points to
>>>>> 00c43b9682507dc622c03172fde1032e2a216e9d [1] as the first commit
>>>>> showing the symptoms.
>>>>>
>>>>> Attached is the output from journalctl -b _TRANSFORM=kernel for
>>>>> the two versions. Not sure what other useful information I can
>>>>> provide apart from that, so please direct me if there is
>>>>> something missing.
>>>>>
>>>>> [1]
>>>>> https://github.com/torvalds/linux/commit/00c43b9682507dc622c03172fde1032e2a216e9d
>>>>
>>>> Interesting.
>>>>
>>>> Please send the output of acpidump from your machine.
>>>
>>> Also please put initcall_debug into the kernel command line and send
>>> dmesg from
>>> the working and not working kernels with that.
>>>
>>> Thanks,
>>> Rafael
>>>
>>>
>>> --
>>> I speak only for myself.
>>> Rafael J. Wysocki, Intel Open Source Technology Center.
>>>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler"
2013-06-27 1:38 ` Aaron Lu
@ 2013-06-27 5:40 ` Cork
2013-06-27 12:18 ` Rafael J. Wysocki
0 siblings, 1 reply; 6+ messages in thread
From: Cork @ 2013-06-27 5:40 UTC (permalink / raw)
To: Aaron Lu; +Cc: Rafael J. Wysocki, Cork, linux-acpi
Yes, 3.10.0-rc6 fixes the problem (sorry for not checking this before contacting you).
Rafael:
3.8: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:18/LNXVIDEO:00
3.9: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:18/LNXVIDEO:00
3.10-rc6: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:19/LNXVIDEO:00
// Cork
----- Original Message -----
> From: "Aaron Lu" <aaron.lu@intel.com>
> To: "Rafael J. Wysocki" <rjw@sisk.pl>, "Cork" <kernel@box.qzdev.se>
> Cc: linux-acpi@vger.kernel.org
> Sent: Thursday, 27 June, 2013 3:38:49 AM
> Subject: Re: Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler"
>
> On 06/27/2013 06:08 AM, Rafael J. Wysocki wrote:
> > On Wednesday, June 26, 2013 08:38:49 PM Cork wrote:
> >> // Cork
> >
> > OK, thanks.
> >
> > The initialization ordering obviously changed in 3.9 and the ACPI
> > video
> > driver fails to find your backlight device.
> >
> > Can you please tell me what the output of
> >
> > $ find /sys/devices/ -name LNXVIDEO\*
> >
> > is on your system in 3.9 and 3.8?
>
> This should be the same problem as bug 58091, where one of the
> reporter
> is using a similar system Clevo_P150HMx. And I've checked the ACPI
> dump
> of Cork's system, there is also a _ROM method under PCI0.
>
> Cork,
> Possible to test v3.10-rc6 or later kernels? There is a fix for your
> problem, thanks.
>
> Reference: https://bugzilla.kernel.org/show_bug.cgi?id=58091
>
> -Aaron
>
> >
> > Rafael
> >
> >
> >>
> >> ----- Original Message -----
> >>> From: "Rafael J. Wysocki" <rjw@sisk.pl>
> >>> To: "Cork" <kernel@box.qzdev.se>
> >>> Cc: linux-acpi@vger.kernel.org, "Aaron Lu" <aaron.lu@intel.com>
> >>> Sent: Wednesday, 26 June, 2013 10:05:38 PM
> >>> Subject: Re: Sys backlight is empty since landing of "ACPI / PCI:
> >>> Make PCI root driver use struct acpi_scan_handler"
> >>>
> >>> On Wednesday, June 26, 2013 09:52:46 PM Rafael J. Wysocki wrote:
> >>>> On Wednesday, June 26, 2013 07:31:00 PM Cork wrote:
> >>>>> Hello. This is my first time sending a report like this, so
> >>>>> please excuse me if I'm missing some vital information.
> >>>>>
> >>>>> From updating the kernel in Arch linux to 3.9 the brightness
> >>>>> controls stopped working on my Clevo P0150HM. I have tried the
> >>>>> acpi_backlight=vendor boot parameter but it makes no
> >>>>> difference.
> >>>>>
> >>>>> While researching this problem I've found that
> >>>>> /sys/class/backlight is empty in the versions where the buttons
> >>>>> isn't working. Bisecting points to
> >>>>> 00c43b9682507dc622c03172fde1032e2a216e9d [1] as the first
> >>>>> commit
> >>>>> showing the symptoms.
> >>>>>
> >>>>> Attached is the output from journalctl -b _TRANSFORM=kernel for
> >>>>> the two versions. Not sure what other useful information I can
> >>>>> provide apart from that, so please direct me if there is
> >>>>> something missing.
> >>>>>
> >>>>> [1]
> >>>>> https://github.com/torvalds/linux/commit/00c43b9682507dc622c03172fde1032e2a216e9d
> >>>>
> >>>> Interesting.
> >>>>
> >>>> Please send the output of acpidump from your machine.
> >>>
> >>> Also please put initcall_debug into the kernel command line and
> >>> send
> >>> dmesg from
> >>> the working and not working kernels with that.
> >>>
> >>> Thanks,
> >>> Rafael
> >>>
> >>>
> >>> --
> >>> I speak only for myself.
> >>> Rafael J. Wysocki, Intel Open Source Technology Center.
> >>>
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler"
2013-06-27 5:40 ` Cork
@ 2013-06-27 12:18 ` Rafael J. Wysocki
0 siblings, 0 replies; 6+ messages in thread
From: Rafael J. Wysocki @ 2013-06-27 12:18 UTC (permalink / raw)
To: Cork; +Cc: Aaron Lu, linux-acpi
On Thursday, June 27, 2013 05:40:06 AM Cork wrote:
> Yes, 3.10.0-rc6 fixes the problem (sorry for not checking this before contacting you).
OK, great!
Thanks,
Rafael
> Rafael:
> 3.8: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:18/LNXVIDEO:00
> 3.9: /sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:18/LNXVIDEO:00
> 3.10-rc6: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:19/LNXVIDEO:00
>
> // Cork
>
> ----- Original Message -----
> > From: "Aaron Lu" <aaron.lu@intel.com>
> > To: "Rafael J. Wysocki" <rjw@sisk.pl>, "Cork" <kernel@box.qzdev.se>
> > Cc: linux-acpi@vger.kernel.org
> > Sent: Thursday, 27 June, 2013 3:38:49 AM
> > Subject: Re: Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler"
> >
> > On 06/27/2013 06:08 AM, Rafael J. Wysocki wrote:
> > > On Wednesday, June 26, 2013 08:38:49 PM Cork wrote:
> > >> // Cork
> > >
> > > OK, thanks.
> > >
> > > The initialization ordering obviously changed in 3.9 and the ACPI
> > > video
> > > driver fails to find your backlight device.
> > >
> > > Can you please tell me what the output of
> > >
> > > $ find /sys/devices/ -name LNXVIDEO\*
> > >
> > > is on your system in 3.9 and 3.8?
> >
> > This should be the same problem as bug 58091, where one of the
> > reporter
> > is using a similar system Clevo_P150HMx. And I've checked the ACPI
> > dump
> > of Cork's system, there is also a _ROM method under PCI0.
> >
> > Cork,
> > Possible to test v3.10-rc6 or later kernels? There is a fix for your
> > problem, thanks.
> >
> > Reference: https://bugzilla.kernel.org/show_bug.cgi?id=58091
> >
> > -Aaron
> >
> > >
> > > Rafael
> > >
> > >
> > >>
> > >> ----- Original Message -----
> > >>> From: "Rafael J. Wysocki" <rjw@sisk.pl>
> > >>> To: "Cork" <kernel@box.qzdev.se>
> > >>> Cc: linux-acpi@vger.kernel.org, "Aaron Lu" <aaron.lu@intel.com>
> > >>> Sent: Wednesday, 26 June, 2013 10:05:38 PM
> > >>> Subject: Re: Sys backlight is empty since landing of "ACPI / PCI:
> > >>> Make PCI root driver use struct acpi_scan_handler"
> > >>>
> > >>> On Wednesday, June 26, 2013 09:52:46 PM Rafael J. Wysocki wrote:
> > >>>> On Wednesday, June 26, 2013 07:31:00 PM Cork wrote:
> > >>>>> Hello. This is my first time sending a report like this, so
> > >>>>> please excuse me if I'm missing some vital information.
> > >>>>>
> > >>>>> From updating the kernel in Arch linux to 3.9 the brightness
> > >>>>> controls stopped working on my Clevo P0150HM. I have tried the
> > >>>>> acpi_backlight=vendor boot parameter but it makes no
> > >>>>> difference.
> > >>>>>
> > >>>>> While researching this problem I've found that
> > >>>>> /sys/class/backlight is empty in the versions where the buttons
> > >>>>> isn't working. Bisecting points to
> > >>>>> 00c43b9682507dc622c03172fde1032e2a216e9d [1] as the first
> > >>>>> commit
> > >>>>> showing the symptoms.
> > >>>>>
> > >>>>> Attached is the output from journalctl -b _TRANSFORM=kernel for
> > >>>>> the two versions. Not sure what other useful information I can
> > >>>>> provide apart from that, so please direct me if there is
> > >>>>> something missing.
> > >>>>>
> > >>>>> [1]
> > >>>>> https://github.com/torvalds/linux/commit/00c43b9682507dc622c03172fde1032e2a216e9d
> > >>>>
> > >>>> Interesting.
> > >>>>
> > >>>> Please send the output of acpidump from your machine.
> > >>>
> > >>> Also please put initcall_debug into the kernel command line and
> > >>> send
> > >>> dmesg from
> > >>> the working and not working kernels with that.
> > >>>
> > >>> Thanks,
> > >>> Rafael
> > >>>
> > >>>
> > >>> --
> > >>> I speak only for myself.
> > >>> Rafael J. Wysocki, Intel Open Source Technology Center.
> > >>>
> >
> >
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-06-27 12:08 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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[not found] <117469492.1598370.1372275060043.JavaMail.root@qzdev.se>
2013-06-26 19:52 ` Sys backlight is empty since landing of "ACPI / PCI: Make PCI root driver use struct acpi_scan_handler" Rafael J. Wysocki
2013-06-26 20:05 ` Rafael J. Wysocki
[not found] ` <450286594.1598749.1372279129153.JavaMail.root@qzdev.se>
2013-06-26 22:08 ` Rafael J. Wysocki
2013-06-27 1:38 ` Aaron Lu
2013-06-27 5:40 ` Cork
2013-06-27 12:18 ` Rafael J. Wysocki
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