LCD does not wake up
Quoted 1 line · Tomasz Kojm
Try
dpms on.
Good hint, thanks. But doesn't work. :-(
Any other idea how to wakup the LCD?
regards
Hadmut
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Re: Re: LCD does not wake up (problem found)
Ok,
I found the problem and the solution. The problem is mentioned on http://www.thinkwiki.org/How_to_make_ACPI_work, it's a kernel bug.
It takes the boot parameter
acpi_sleep=s3_bios
The web pages says this problem had been fixed in 2.6.11-rc1, but obviously it still exists.
regards
Hadmut
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Re: Re: LCD does not wake up (problem found)
Quoted 5 lines · Hadmut Danisch
Ok,
I found the problem and the solution. The problem is mentioned on http://www.thinkwiki.org/How_to_make_ACPI_work, it's a kernel bug.
The webpage only applies to thinkpads. For information about other manufacturers and models, please refer to Documentation/power/video.txt in your Linux source. However, I can't see where on the page that problem is described as a kernel bug.
Quoted 7 lines
It takes the boot parameter
acpi_sleep=s3_bios
The web pages says this problem had been fixed in 2.6.11-rc1, but obviously it still exists.
Yes, that is a machine specific parameter. Some time in the future, distributions will probably set it automatically, but there is no generic way to find out which resume parameters a machine needs, we can only build a database and use that.
Regards,
Carl-Daniel
Signature · 8 lines
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Re: Re: LCD does not wake up (problem found)
In reply to a message not in the archiveQuoted 5 lines · Hadmut Danisch
Ok,
I found the problem and the solution. The problem is mentioned on http://www.thinkwiki.org/How_to_make_ACPI_work, it's a kernel bug.
It's not a kernel bug. Most hardware needs the video to be reinitialised. s3_bios is one way of attempting to do that, and it works on some hardware. On other hardware, it crashes the machine.
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