saucy has 3.11 now, so I'm guessing fix released.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Fix Committed = Won't Fix
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Won't Fix = Fix Released
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This is fixed upstream in the 3.10-rc4 kernel by this commit:
author Ash Willis 2013-05-29
committer Rafael J. Wysocki 2013-06-01
commit 780a6ec640a3fed671fc2c40e4dd30c03eca3ac3
ACPI / video: ignore BIOS initial backlight value for HP Pavilion g6
This patch addresses kernel
** Tags added: backlight
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https://bugs.launchpad.net/bugs/1173059
Title:
Ubuntu 13.04 boots to dark screen on HP G6 laptop - ACPI backlight
woes
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** Summary changed:
- Ubuntu 13.04 boots to dark screen on HP G6 laptop
+ Ubuntu 13.04 boots to dark screen on HP G6 laptop - ACPI backlight woes
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New = Confirmed
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Thank you Peter for your suggestion of acpi_osi=Linux
acpi_backlight=vendor. I added those to /etc/default/grub and ran
update-grub2 and indeed the laptop now does not boot into a dark screen.
It has been booting into a dark screen since 12.04, but I only found
this tip after I have updated to
I guess this needs a quirk set somewhere..
** Package changed: xorg (Ubuntu) = xserver-xorg-video-intel (Ubuntu)
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Title:
Ubuntu 13.04 boots to
In the acpi backlight driver...
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https://bugs.launchpad.net/bugs/1173059
Title:
Ubuntu 13.04 boots to dark screen on HP G6 laptop
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Have managed to get round this problem by modifying grub as follows:
GRUB_CMDLINE_LINUX_DEFAULT=quiet splash
to
GRUB_CMDLINE_LINUX_DEFAULT=quiet splash acpi_osi=Linux
acpi_backlight=vendor
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