Comment 2 for bug 653985

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Ethan Shalev (shalev-ethan) wrote : Re: backlight does not switch on at boot

This did not happen in Lucid, but after running the upgrade to Maverick, I'm also encountering this issue.
from $ lspci -v:
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 12) (prog-if 00 [VGA controller])
 Subsystem: Acer Incorporated [ALI] Device 031c
 Flags: bus master, fast devsel, latency 0, IRQ 43
 Memory at d0000000 (64-bit, non-prefetchable) [size=4M]
 Memory at c0000000 (64-bit, prefetchable) [size=256M]
 I/O ports at 3050 [size=8]
 Expansion ROM at <unassigned> [disabled]
 Capabilities: <access denied>
 Kernel driver in use: i915
 Kernel modules: i915