dmesg of my hybrid notebook (intel + nvidia gfx cards)
http://pastebin.com/VdDtBQqs
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https://bugs.launchpad.net/bugs/1053269
Title:
black boot
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boot.cfg
http://pastebin.com/XstaeXXA
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Title:
black boot
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dmesg blacklisting nvidia_current module (same broken behaviour)
http://pastebin.com/ZVSqxYk8
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Title:
black boot
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reverting to -21 kernel fixes the issue... so it is kernel related
** Also affects: linux
Importance: Undecided
Status: New
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** Package changed: grub2 (Ubuntu) = linux (Ubuntu)
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Title:
black boot
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** No longer affects: linux
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black boot
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** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
** Tags added: regression-update
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black boot
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** Changed in: linux (Ubuntu)
Importance: Medium = Critical
** Changed in: linux (Ubuntu)
Assignee: (unassigned) = Kamal Mostafa (kamalmostafa)
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** Changed in: linux (Ubuntu)
Status: Confirmed = In Progress
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black boot
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@Lucazade- Thanks very much for reporting this regression. We're
reasonably sure that the problem was introduced by one of the two
backlight patches which were included in the 3.5.0-15.22 kernel. I've
prepared two new test kernels -- each has just one of those patches
applied:
@Kamal:
tried both kernels you provided but unfortunately none of these works.. still a
blank screen from post-grub to X.. no VT or plymouth are visible.
tried again the -21 release just to be sure it always work and it is
ok..
let me know if I can provide any log to debug it better!
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@Lucazade-
I'm very surprised that neither of those fixes it! For each of those test
kernels (patch1only and patch2only), please install and boot that kernel,
capture the output from 'dmesg' , and post that here.
Also, please clarify exactly what happens... Are you saying that the
black
i'll gather both dmesg and paste it here asap ;)
I'm saying that the screen goes black during the boot sequence (just
after grub) but then lights itself up again at lightdm (so when X goess
up)
In that black period I don't see the usual plymouth splashscreen neither
i'm able to switch to any
Ah, thanks for the clarification!
** Changed in: linux (Ubuntu)
Importance: Critical = Medium
** Summary changed:
- black boot
+ screen goes black after grub, lights up again when X starts
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: grub2 (Ubuntu)
Status: New = Confirmed
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