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First READ about how I deceived ubuntu-bug!

I'm not sure it matters or what info ubuntu-bug collects, but I didn't
do "ubuntu-bug linux" since it gave an error:

"Problem in linux-image-3.19.0-13-generic

The problem cannot be reported:

This is not an official Ubuntu package. Please remove any third party
package and try again."

I did ubuntu-bug Xorg just to get some collection of info, NOT saying
xorg is the fault.

Note that this bug report is NOT about that kernel but the most current
(and maybe one or two others).

Yesterday I wasn't having this problem with kernels (at least not the
newest one I had not installed.. I may have had different problems, do
not believe hardware broken though).

$ ls -lrt /boot/initrd.img-3.1*
-rw-r--r-- 1 root root 19976179 apr 10 17:20 /boot/initrd.img-3.13.0-47-generic
-rw-r--r-- 1 root root 21779681 apr 11 14:54 /boot/initrd.img-3.19.0-13-generic
-rw-r--r-- 1 root root 21782845 apr 19 13:54 /boot/initrd.img-3.19.0-15-generic
-rw-r--r-- 1 root root 21733320 maí  8 20:26 /boot/initrd.img-3.19.0-15-lowlatency
-rw-r--r-- 1 root root 21780289 maí  8 21:04 /boot/initrd.img-3.19.0-17-generic

I believe I've been running 3.19.0-15-generic for the last few days. I
just run the most recent one (usually - but not now because of the
problems below).

Today (this evening) I upgraded some stuff including the kernel.
3.19.0-17 does not boot up. I've tried several times and get a blank
screen. I may have gotten something else, a splash-screen (not as far as
login-screen), on the first try. DO not count on that as I may
misremember.

Then booting into 3.19.0-15-generic I could log in, so it seems the
kernel above is the problem. Note I also upgraded more, say networking.
AND now while I can log in, that kernel quickly froze (twice just after
starting Chrome w/lots of tabs) - in a way I've never seen - the CAPS
LOCK and the light to the RIGHT (NOT NUM LOCK to the left) where
blinking in sync. I may have forgotten (or not?) to try a virtual
terminal as this seemed a sure indication that something was wrong.

[I also booted into just-installed 3.19.0-15-lowlatency and got the
blinking lights.]

Then I booted into 3.19.0-13 and am now for a much longer time in
Chrome, so far no freeze..

[I was doing apt-get autoclean today, deleting kernels, so maybe I'm
wrong about the exact version of the kernel I was running without
problems, but at least all the info on kernels that do not work are
right.]

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 3.19.0-13.13-generic 3.19.3
Uname: Linux 3.19.0-13-generic x86_64
NonfreeKernelModules: wl
.tmp.unity.support.test.0:
 
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CompositorRunning: None
CurrentDesktop: Unity
Date: Fri May  8 21:50:41 2015
DistUpgraded: 2015-04-06 16:46:01,057 DEBUG enabling apt cron job
DistroCodename: vivid
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GpuHangFrequency: Continuously
GpuHangReproducibility: Yes, I can easily reproduce it
GpuHangStarted: Today
GraphicsCard:
 
InstallationDate: Installed on 2014-08-21 (260 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: Dell Inc. Inspiron 1525
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-13-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UnitySupportTest: Error: [Errno 12] Cannot allocate memory
UpgradeStatus: Upgraded to vivid on 2015-04-06 (32 days ago)
dmi.bios.date: 10/27/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A17
dmi.board.name: 0U990C
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA17:bd10/27/2009:svnDellInc.:pnInspiron1525:pvr:rvnDellInc.:rn0U990C:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1525
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Fri May  8 21:43:05 2015
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                               12631 
 vendor                                     SEC
xserver.version: 2:1.17.1-0ubuntu3

** Affects: linux (Ubuntu)
     Importance: Medium
         Status: Incomplete


** Tags: amd64 apport-bug freeze latest-bios-a17 ubuntu vivid
-- 
Linux kernel freeze (it seems in current/3.19.0-17) on Dell Inspiron 1525
https://bugs.launchpad.net/bugs/1453302
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