another possible candidate re "boot hang":
commit 0e126cfab3928e8b01e17e1e707eec2bfdb4f1c2
Author: Len Brown <len.br...@intel.com>
Date: Wed Jan 15 00:37:34 2014 -0500
sched/idle/x86: Restore mwait_idle() to fix boot hangs, to improve
power savings and to improve performance
commit b253149b843f89cd300cbdbea27ce1f847506f99 upstream.
In Linux-3.9 we removed the mwait_idle() loop:
69fb3676df33 ("x86 idle: remove mwait_idle() and "idle=mwait"
cmdline param")
The reasoning was that modern machines should be sufficiently
happy during the boot process using the default_idle() HALT
loop, until cpuidle loads and either acpi_idle or intel_idle
invoke the newer MWAIT-with-hints idle loop.
But two machines reported problems:
1. Certain Core2-era machines support MWAIT-C1 and HALT only.
MWAIT-C1 is preferred for optimal power and performance.
But if they support just C1, cpuidle never loads and
so they use the boot-time default idle loop forever.
2. Some laptops will boot-hang if HALT is used,
but will boot successfully if MWAIT is used.
This appears to be a hidden assumption in BIOS SMI,
that is presumably valid on the proprietary OS
where the BIOS was validated.
https://bugzilla.kernel.org/show_bug.cgi?id=60770
So here we effectively revert the patch above, restoring
the mwait_idle() loop. However, we don't bother restoring
the idle=mwait cmdline parameter, since it appears to add
no value.
Maintainer notes:
For 3.9, simply revert 69fb3676df
for 3.10, patch -F3 applies, fuzz needed due to __cpuinit use in
context For 3.11, 3.12, 3.13, this patch applies cleanly
Tested-by: Mike Galbraith <bitbuc...@online.de>
Signed-off-by: Len Brown <len.br...@intel.com>
Acked-by: Mike Galbraith <bitbuc...@online.de>
Cc: Borislav Petkov <b...@alien8.de>
Cc: H. Peter Anvin <h...@zytor.com>
Cc: Ian Malone <ibmal...@gmail.com>
Cc: Josh Boyer <jwbo...@redhat.com>
Cc: Linus Torvalds <torva...@linux-foundation.org>
Cc: Mike Galbraith <efa...@gmx.de>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Thomas Gleixner <t...@linutronix.de>
Link:
http://lkml.kernel.org/r/345254a551eb5a6a866e048d7ab570fd2193aca4.1389763084.git.len.br...@intel.com
[ Ported to recent kernels. ]
Signed-off-by: Ingo Molnar <mi...@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
On 20 May 2015 at 16:50, Nils Fenner <nilsfen...@web.de> wrote:
> Agree'd. With this patch, screen turns off (not only black).
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1455852
>
> Title:
> 15.04 will not boot on MacBook 2,1
>
> To manage notifications about this bug go to:
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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1455852
Title:
15.04 will not boot on MacBook 2,1
Status in linux package in Ubuntu:
Incomplete
Bug description:
see: http://ubuntuforums.org/showthread.php?t=2274999&p=13286624#post13286624
Lubuntu 15.04 on refit grub dual boot macbook 2,1 linux-image-3.16 will boot,
though
sometimes hangs but, reboot will work eventually.
With linux-image-3.19 never,
? is the GPU hang reported in kern.log relevant here? i915 problem?
see kern.log snippet attached
see error attached from GPU crash dump saved to /sys/class/drm/card0/error
This seems to be a BUG as suggested by the log:
"...
Please file a _new_ bug report on bugs.freedesktop.org against DRI ->
DRM/Intel
from: /sys/class/drm/card0/error:
GPU HANG: ecode -1:0x00000000, reason: Command parser error, iir 0x00008000,
action: continue
Time: 1431810790 s 799079 us
Kernel: 3.16.0-25-generic
Reset count: 0
Suspend count: 0
PCI ID: 0x27a2
EIR: 0x00000010
IER: 0x00028053
PGTBL_ER: 0x00000102
FORCEWAKE: 0x00000000
DERRMR: 0x00000000
CCID: 0x00000000
Missed interrupts: 0x00000000
fence[0] = 00000000
fence[1] = 00000000
fence[2] = 00000000
fence[3] = 00000000
fence[4] = 00000000
fence[5] = 00000000
fence[6] = 00000000
fence[7] = 00000000
fence[8] = 00000000
fence[9] = 00000000
fence[10] = 00000000
fence[11] = 00000000
fence[12] = 00000000
fence[13] = 00000000
fence[14] = 00000000
fence[15] = 00000000
INSTDONE_0: 0x7fffffc0
INSTDONE_1: 0x00000000
INSTDONE_2: 0x00000000
INSTDONE_3: 0x00000000
render command stream:
bsd command stream:
blt command stream:
vebox command stream:
bsd2 command stream:
Active [0]:
Pinned [0]:
Num Pipes: 2
Pipe [0]:
Power: on
SRC: 027f01df
STAT: 90000a03
Plane [0]:
CNTR: 00000000
STRIDE: 00000000
SIZE: 00000000
POS: 00000000
ADDR: 00000000
Cursor [0]:
CNTR: 00000000
POS: 00000000
BASE: 00000000
Pipe [1]:
Power: on
SRC: 03ff02ff
STAT: 10000202
Plane [1]:
CNTR: 99000000
STRIDE: 00001000
SIZE: 02ff03ff
POS: 00000000
ADDR: 00000000
Cursor [1]:
CNTR: 00000000
POS: 00000000
BASE: 00000000
CPU transcoder: A
Power: on
CONF: 00000000
HTOTAL: 031f027f
HBLANK: 03170287
HSYNC: 02ef028f
VTOTAL: 020c01df
VBLANK: 020401e7
VSYNC: 01eb01e9
CPU transcoder: B
Power: on
CONF: 80000000
HTOTAL: 059f04ff
HBLANK: 059f04ff
HSYNC: 054f052f
VTOTAL: 0336031f
VBLANK: 0336031f
VSYNC: 03280322
---
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: bryan 1188 F.... pulseaudio
CurrentDesktop: LXDE
DistroRelease: Ubuntu 15.04
HibernationDevice: RESUME=UUID=921b491d-af65-4a9e-a51d-47d3c6dcbac2
InstallationDate: Installed on 2012-10-27 (932 days ago)
InstallationMedia: Lubuntu 12.10 "Quantal Quetzal" - Release amd64+mac
(20121017.1)
MachineType: Apple Inc. MacBook2,1
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-25-generic
root=UUID=37fab4ad-d609-4d2a-ab4b-5c1a41d2f9fc ro init=/bin/systemd
ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
RelatedPackageVersions:
linux-restricted-modules-3.16.0-25-generic N/A
linux-backports-modules-3.16.0-25-generic N/A
linux-firmware 1.143
Tags: vivid
UdevLog:
Uname: Linux 3.16.0-25-generic x86_64
UpgradeStatus: Upgraded to vivid on 2015-04-26 (20 days ago)
UserGroups: adm cdrom dip lpadmin netdev plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 06/27/07
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MB21.88Z.00A5.B07.0706270922
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Mac-F4208CAA
dmi.board.vendor: Apple Inc.
dmi.board.version: PVT
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F4208CAA
dmi.modalias:
dmi:bvnAppleInc.:bvrMB21.88Z.00A5.B07.0706270922:bd06/27/07:svnAppleInc.:pnMacBook2,1:pvr1.0:rvnAppleInc.:rnMac-F4208CAA:rvrPVT:cvnAppleInc.:ct10:cvrMac-F4208CAA:
dmi.product.name: MacBook2,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
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