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legacy
Tux's lil' helper
Joined: 10 Sep 2012
Posts: 144
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 Posted: Fri May 24, 2013 3:24 pm Post subject: powerbook G4@1.6Ghz, is there a kernel driver for the LCD ? |
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hi
i ve got powerbook G4 @ 1.6Ghz, i noticed the LCD is not working well, sometime it becomes dark and i the only solution is to sleep the laptop because resuming it seems to reset the LCD. MacOSX 10.4 is working fine without this issue.
I am running 2.6.26, is this issue still present on modern kernels ? |
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JoseJX
Retired Dev
Joined: 28 Apr 2002
Posts: 2774
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| Posted: Fri May 31, 2013 6:54 pm Post subject: |
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I've never seen this exact problem, but if you use pbbuttonsd, you can adjust the brightness of the screen. This works fine for me, even with modern kernels.
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chithanh
Developer
Joined: 05 Aug 2006
Posts: 2158
Location: Berlin, Germany
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| Posted: Fri May 31, 2013 8:55 pm Post subject: |
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| If it has a radeon chipset, older kernels rely on radeonfb or ACPI (which the ppc doesn't have) to set LCD brightness. Only in recent kernels, the radeon drm supports brightness control. |
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legacy
Tux's lil' helper
Joined: 10 Sep 2012
Posts: 144
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| Posted: Fri Jun 14, 2013 2:44 pm Post subject: |
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| so what kernel do you suggest ? |
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gringo
Advocate
Joined: 27 Apr 2003
Posts: 3793
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| Posted: Thu Jun 20, 2013 1:03 pm Post subject: |
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| legacy wrote: | | so what kernel do you suggest ? |
try with latest stable gentoo-sources.
I dont recall ever having a similar problem in my powerbook and yes, it has a r300 (9600) radeon card.
cheers |
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legacy
Tux's lil' helper
Joined: 10 Sep 2012
Posts: 144
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| Posted: Sun Jun 30, 2013 9:31 pm Post subject: |
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what is the kernel version you are using without the issue i am having with 2.6.26 ?
and could you post the kernel config ? |
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blob999
n00b
Joined: 07 Jun 2009
Posts: 64
Location: NATO area
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| Posted: Tue Jul 02, 2013 1:46 pm Post subject: |
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is there a valid reason to use such old kernel ?
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legacy
Tux's lil' helper
Joined: 10 Sep 2012
Posts: 144
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| Posted: Tue Jul 02, 2013 2:21 pm Post subject: |
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| yes, i have, also is there a valid reason to pass to new kernels which are causing me a lot of troubles about all the usb kernel module staff i have designed ? I do not have the time to re-write/adapt them, not at the present. |
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