* Re: Input Brightness events on EeePc 1201HA [not found] ` <1272643738.26706.63.camel@plop> @ 2010-05-02 12:31 ` Corentin Chary 2010-05-02 14:25 ` Matthew Garrett 0 siblings, 1 reply; 2+ messages in thread From: Corentin Chary @ 2010-05-02 12:31 UTC (permalink / raw) To: Pascal Terjan, Zhang, Rui; +Cc: acpi4asus-user, linux acpi CCing linux-acpi and Zhang Rui. >> - Does brightness react to keypress (up and/or down) in grub ? windows >> ? linux wihout X ? > > It does not work in GRUB for an unknown reason but I have "good" news > > It works in Linux, without using video (which can not manage this > machine), until psb driver is loaded and creates a backlight device > using PWM! Looking at the dsdt: Method (STBR, 0, Serialized) { If (And (^^^GFX0.TCHE, 0x02)) { ISMI (0x7A) ^^^GFX0.AINT (One, PAR0) } Else { ISMI (0x78) } } ISMI (0x78) is the working path, so when psb load, And (^^^GFX0.TCHE, 0x02) become true, Maybe in this case the psb driver should do something that it doesn't. A quick workaround would be to send input events in eeepc-laptop if GFX0.TCHE & 0x2, but does not sound pretty. > Unfortunately I can't think of a solution for machines using psb except > disabling backlight handling there. > > It would either conflict (2 backlights device, on in psb, the other in > eeepc-laptop/wmi) or have keys not handled (as both would not handle > them if they do not handle backlight) -- Corentin Chary http://xf.iksaif.net ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Input Brightness events on EeePc 1201HA 2010-05-02 12:31 ` Input Brightness events on EeePc 1201HA Corentin Chary @ 2010-05-02 14:25 ` Matthew Garrett 0 siblings, 0 replies; 2+ messages in thread From: Matthew Garrett @ 2010-05-02 14:25 UTC (permalink / raw) To: Corentin Chary; +Cc: Pascal Terjan, Zhang, Rui, acpi4asus-user, linux acpi On Sun, May 02, 2010 at 02:31:19PM +0200, Corentin Chary wrote: > > It works in Linux, without using video (which can not manage this > > machine), until psb driver is loaded and creates a backlight device > > using PWM! The PSB driver needs to implement the Intel video device opregion spec. Unfortunately it's developed in a closed environment and we have no ability to contribute fixes to it. -- Matthew Garrett | mjg59@srcf.ucam.org ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2010-05-02 14:26 UTC | newest]
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2010-05-02 12:31 ` Input Brightness events on EeePc 1201HA Corentin Chary
2010-05-02 14:25 ` Matthew Garrett
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