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If i'm booting with "nomodeset" then can't change Brightness/Login/Logout/Suspend/Resume ..etc. Accidentally booted once without "nomodeset" everything was working (Brightness/Login/Logout/Suspend/Resume).

I tried alot of fixes like "acpi_backlight=vendor" in kernel option, but without any success :-(

My system: Ubuntu 12.4.3 (64bit) On HP 250 (preinstalled with ubuntu)

lspci -nnk | grep -A5 VGA
00:02.0 VGA compatible controller [0300]: **Intel Corporation 3rd Gen Core processor      Graphics Controller** [8086:0166] (rev 09)
Subsystem: Hewlett-Packard Company Device [103c:1854]
Kernel modules: i915
00:16.0 Communication controller [0780]: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 [8086:1e3a] (rev 04)
Subsystem: Hewlett-Packard Company Device [103c:1854]
Kernel driver in use: mei

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falconer
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mamPHP
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1 Answers1

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Why are you trying to use the nomodeset option? The intel VGA-s should be used with KMS enabled, so you shouldn't use the nomodeset option.

(Also unrelated to your question, but the mei module is known to cause problems, so if you don't need it you may want to blacklist it.)

UPDATE:

So you said in the comments that booting with KMS enabled results in a blank screen, but if you close/open the laptop lid everything gets normal. Maybe you have the problem stated here. You might try the solutions presented there.

Here is another similar problem which says that it is a problem that the blacklight is off. It links to this workaround. You may try that one also.

Or try the boot parameters presented here. (add the acpi_osi=Linux parameter also, not just the acpi_backlight)

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falconer
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