The bug still exists in Ubuntu 14.04 LTS and 16.04 LTS. As proposed in
comment #76 I filed a new bug report as bug #1687910.
** Tags added: trusty xenial
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Under Fedora I use the kernel parameter of nox2apic
Perhaps there is a similar one for Debian.
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Title:
[Lenovo W520] laptop freezes on
This problem still Presist in Ubuntu 14.04 (fully updated as of today).
I have Lenovo W520 running Ubuntu 14.04 and NVIDIA Corporation GF108GLM
[Quadro 1000M]. Anything that tries to change brightness can freeze the
system, but only if running in Discrete Graphics Mode (in BIOS). I need
Discrete
I case anyone runs into this later in time:
I just got W520 and moved my Trusty installation from T520. Had various
issues, mostly explained above. Upgraded to nvidia-352, upgraded to
linux-image-generic-lts-wily (linux 4.2.0), problems persisted.
Then I just disabled VT-d in BIOS, and all the
Had problem on Lenovo W520 with Kubuntu 14.04 to get external VGA AND LVDS
working.
With Optimus no chance.
Had to switch to discrete graphics in Bios.
Nvidia drivers nogo.
Switched to Nouveau i.e. reinstalled the driver.
But than had problem with brightness on LVDS.
Finally figured out working
Please reopen. This happens to me for Ubuntu 14.04 on a Lenovo T530 with
nvidia drivers. It only happens when I switch to Discrete Graphics in
the BIOS, but running in Optimus breaks other things (cannot change the
virtual layout of external screens without glitches).
Using all the proposed
This is what happens when I tried echo 5 sudo tee
/sys/class/backlight/acpi_video0/brightness. It instantly froze
everything except the mouse pointer, which froze after about 10 seconds
as well. You can see lots of erros in the log file.
** Attachment added: Xorg.0.log.old
Please reopen. Same issues for me on Ubuntu 12.04 64 bit. Frequent lockups
during boot, cannot resume, locks up when brightness changed.
T520 + NVidia 4200M
32 bit install of Ubuntu 12.04 is solid, 64 bit install of Ubuntu 12.04 is
unusable
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I'm also affected. Ubuntu 13.10 64 bit. Freezes between GRUB and login
if I set graphics to discrete card.
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Title:
[Lenovo W520] laptop freezes
Sorry, forgot to say this is on a Lenovo T520 with Intel HD3000 + Nvidia
4200M
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Title:
[Lenovo W520] laptop freezes on ACPI-related actions
To
Same here, ubuntu 13.04 64 bit, brightness changed by fn+up/down and the
system freezes.
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Title:
[Lenovo W520] laptop freezes on ACPI-related
Please reopen.
T530. Ubuntu 12.10 64 bit.
Freezes when brightness is changed (automatically by os).
Sometimes does not boot at all.
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Title:
This bug was filed against a series that is no longer supported and so
is being marked as Won't Fix. If this issue still exists in a supported
series, please file a new bug.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
I have been having this issue on other distributions as well since
kernel 3.2, and I have tried every release up to 3.6.2. The issue still
exists. I have tried the latest bios for the w520 as well (1.39)
Some workarounds include:
1) Use integrated graphics only
2) Use optimus with bumblebee
3)
Apologies, I posted a comment to the wrong bug. The above comment and
this one should be removed. I have marked both as hidden for now.
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Title:
I'm also affected. I thought things were going well with my W520: I got
12.04 64-bit working in discrete mode with Unity3D and it was all good
until I installed VirtualBox and realized that VT-X was turned off in my
BIOS. I turned it on and then could no longer boot (I need fast virtual
machines
Hello,
I can confirm that this bug also affects the W530. With discrete graphics
enabled I get boot hanging at udev in Mint 13 Maya 64-bit. Adding the nox2apic
boot parameter allows the system to boot without issue.
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Hi,
Lenovo W520. Mint 13 (Maya) 64bit with MATE.
Boot freezes with Discrete Graphics selected on BIOS.
I am also annoyed by this bug, since I need to attach an external
monitor on a daily basis.
Best workaround I found: booting W7 (booo!), then using Virtual Box to
run Mint off its partition
OK, T420, 64 bit, Precise 12.04, the only option that helped to battle
those booting freezes is nox2apic in the /etc/default/grub
Finally the discrete Nvidia chip graphics works with and without docking
station, as well as booting to different primary monitors.
** Attachment added:
Note: Still having this issue with 12.04
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Title:
[Lenovo W520] laptop freezes on ACPI-related actions
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I too have this problem. I solved it with the nox2apic solution.
My question is: What is the downside to using nox2apic or nointremap?
Especially related to virtual machines, and to cpu or other performance
considerations.
Any help is greatly appreciated!
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I am having similar problems on a lenovo T520. Ubuntu 11.10 worked fine
but could not talk to the docking station graphic ports. Backtrack 5.2
(an 11.10 branch) worked fine also (again minus docking station).
12.04 can talk to the docking station graphics ports but frequently
hangs. I can run
So from the descriptions above, it sounds like the Lenovo BIOS SMI
handling is not supporting x2apic mode. Will post a kernel patch to
blacklist x2apic enabling on this system, once I figure out what I need
to use for the blacklist.
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I'm far from an expert on the subject, but my understanding is that the
primary enhancement of x2apic over apic/xapic is 32-bit vs 8-bit
addressability of the proc for interrupts. Apic/xapic should be capable
of having 255 interrupt processors registered, which should be more than
any of our
Under BIOS 1.36, Ubuntu 12.04 Beta2, Linux 3.2.0-21-generic
#34-Ubuntu SMP Fri Mar 30 04:25:35 UTC 2012 x86_64 x86_64 x86_64
GNU/Linux, the problem still occurs.
Indeed, with the nox2apic kernel option, I can still enable VT-d, nvidia
295.33 and things stay stable.
But whats is impact of
I can confirm that adding nox2apic to the boot options fixed the
freezes, and brightness adjustment works correctly. Here's my set up for
reference:
- ThinkPad W520
- NVidia Quadro 1000M
- Intel i7 QM2760
- 32GB DDR3 1600 (PC 12800)
- 2x Samsung 830 256GB SSD configured with Linux software RAID0,
And I also have all virtualization settings enabled in BIOS.
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Title:
[Lenovo W520] laptop freezes on ACPI-related actions
To manage
I have a w520 running Ubuntu 11.10 64-bit with the graphics option set
to discrete in the BIOS. I was experiencing the same system freezes
when I tried to use fn+home/fn+end lcd brightness controls.
Adding 'nox2apic' to the boot options and the nvidia-specific
EnableBrightnessControl=1 option in
As a follow-up, I still have Vt-d enabled in the BIOS. That may help
your case, otakuj462.
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Title:
[Lenovo W520] laptop freezes on ACPI-related
I have also encountered this issue. Running 64-bit linux was a
requirement for me, and so all of my tests were performed against that.
I found that I was able to boot reliably by setting the graphics to
Intel in the BIOS. When graphics were set to Discrete in the BIOS, and
Vt-d was turned on, the
On 64bits, where the problem occurs, can someone try these boot options, one at
a time:
- nointremap
- nox2apic
- x2apic_phys
On my T420, the first two prevented the freeze when changing the
brightness. See
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/922037/comments/7
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I verified it.
Adding EnableBrightnessControl to xorg.conf (either in
/etc/X11/xorg.conf or other ways as suggested by Cley) fixed it for me,
i can now change brightness.
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I am also affected by this bug, but found a solution where for several days now
booting works, suspend works
using 64bit 11.10
all i did was:
use noapic as Kernel cmdline parameter
I have successfully suspended/restarted in the last few days, i am not
sure about booting on battery, but this
Can you still change the brightness after going with a 32b installation,
or using the noapic parameter?
I reinstalled with precise 32bits and it doesn't freeze anymore, but the
brightness control doesn't work either. The indicator shows up in the
right top corner and the slider moves about, but
btw, mine is a T420, but it had the same symptom, so I posted here.
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Title:
[Lenovo W520] laptop freezes on ACPI-related actions
To manage
I cannot control brightness with my current setup.
However i remember having tested brightness with a clean install on another
disk and brightness control worked after adding
Option RegistryDwords EnableBrightnessControl=1
in xorg.conf
I am using the nvidia proprietary drivers and running in
There is no /etc/X11/xorg.conf anymore, do I need to start one from
scratch nowadays to add that EnableBrightnessControl option?
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Title:
[Lenovo
Hm... mine was there... it only contained this:
Section Device
Identifier Default Device
Option NoLogoTrue
EndSection
and i added the EnableBrightnessControl line inside the Device section.
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FYI if you still need something from xorg.conf on a recent system, you
should look at things like HAL configuration.
But to do a quick fix with xorg.conf stuff, you can create little files
in /usr/share/X11/xorg.conf.d with only a section (or part of a
section). This path should be visible if you
Re: 32 bit recommendation - Just out of curiosity - can you still use
VMware to run a 64-bit guest OS if you do that?
BTW - I tried Andy's suggestions and it was stable for about a week.
However, after the latest round of updates, it did a PSOD and after
getting into grub, I notice my changes
re: go with 32 bit - yes, I also recommend this.
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Title:
[Lenovo W520] laptop freezes on ACPI-related actions
To manage notifications about this
I, too, can confirm this bug. I also noticed the connection when I flip
on the wireless hardware switch - it freezes then, too. I thought they
were separate issues (they may still be), but reading above makes me
wonder if it is indeed related. I can boot up about 30% of the time.
Adjusting the
I would strongly encourage people struggling with these issues on 64
bit Ubuntu to go with 32 bit Ubuntu instead. It will automatically use
the PAE kernel so that you can take advantage of all your ram, and
everything will be rock solid (or much closer to it) -- hugely, vastly
better. That was
I have a Thinkpad T520 with Nvidia NVS 4200M, using proprietary drivers.
It also freezes whenever brightness is turned up/down. Disabling VT-d
fixes the crashes when trying to turn up/down brightness but disables
brightness (adjusting brightness does not work).
Disabling ACPI is not a good
See my bug report #787809 for complete information.
My ASUS x56TR freezes when power cord is unplugged or plugged. I've
updated my BIOS to the newest version - no success. Adding acpi=off
noacpi to boot command, seems to help however, but i've not tested it
long enough to be certain.
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Running W520 - Nvidia quadro 2000M, 16GB, 11.10 x64
Turning on VT-d option in the BIOS cause the system to fail to boot at all.
Turned off VT-d, and everything works fine.
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After updating to the latest BIOS 1.32 and Ubuntu 11.10 I can now successfully
boot into Ubuntu without using acpi=off. I can even leave Optimus switched on
in BIOS and Ubuntu seems to be using the Intel card when the nvidia driver is
not installed.
I'm booting with legacy BIOS mode (not UEFI),
I flashed to 1.32 and can not complete a boot with discrete graphics
turned on unless I add the noapic to boot options.
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Title:
[Lenovo W520]
Thinkpad W520 - 4270CTO (Nvidia Quadro 1000M - 4 Gb RAM - nouveau)
BIOS version 8BET50WW ( 1.30 ) - latest on lenovo's site
(setup UEFI boot - BIOS set to UEFI only)
If I disable VT-d extensions in the BIOS, then I don't need to set pci=noacpi
to prevent crashes.
(vmx is still enabled.)
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This bug also hit me - but I can confirm, that after booting with
pci=noacpi and adding the EnableBrightnessControl option almost
everything works like a charm for me: Almost - just the OSD of the
brightness control is shown but does not follow the brightness change -
but I can live with that...
Hi
I see the same problem with Ubuntu 10.10 11.04 - any status on the
bug?
ThinkPad W520 4284-49g (Nvidia Quadro 2000M, 16 Gb RAM, Nvidia 280.13)
regards
Flemming
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Things that started happening at the same time that I began getting this
bug: Brightness meter APP stopped working, it disappears when i click
the slider bar; wireless says pending connection and requires a reboot;
wireless cuts out often soon after changing to powersaver with CPU
Frequency
@ Charles Profitt:
my config info, that works:
http://ubuntuforums.org/showpost.php?p=6461postcount=68
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Title:
[Lenovo W520] laptop freezes
@ Charles Profitt: what is your hardware / os details?
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Title:
[Lenovo W520] laptop freezes on ACPI-related actions
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Andrei:
Lenovo W520 - 4284-WJ3 - i72720QM
2.6.38-10-generic #46-Ubuntu SMP Tue Jun 28 15:07:17 UTC 2011 x86_64
x86_64 x86_64 GNU/Linux
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Title:
The xorg.conf did not resolve my ACPI issues.
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Title:
[Lenovo W520] laptop freezes on ACPI-related actions
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Thanks for reporting this bug and any supporting documentation. Since
this bug has enough information provided for a developer to begin work,
I'm going to mark it as confirmed and let them handle it from here.
Thanks for taking the time to make Ubuntu better!
** Changed in: linux (Ubuntu)
Boots:
Try booting with the acpi=off kernel parameter
Try booting with pci=noacpi
Try booting with noapic
add:
Option RegistryDwords EnableBrightnessControl=1
I can control brightness but the OSD does not work properly:
Try booting with the acpi=off kernel parameter
Try booting with pci=noacpi
Try booting with pci=noacpi
Option RegistryDwords EnableBrightnessControl=1
results in OSD working, brightness control working and I can suspend and
resume.
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I have found a solution to brightness changing if you have gone the
32bit route to solve the issues in this bug report.
In Kubuntu 11.04 32-bit, change to a virtual console, ie: alt+ctrl+F1,
change brightness with Fn+brightness to the desired level, then
alt+ctrl+F7 to get back to X and the level
Kubuntu 11.04 32-bit brightness workaround confirmed:
alt+ctrl+F1, Fn+brightness, alt+ctrl+F7
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Title:
[Lenovo W520] laptop freezes on
gentoo people have same problems; they are just smarter then us :-)
http://forums.gentoo.org/viewtopic-t-883277-start-0.html
this: Option RegistryDwords EnableBrightnessControl=1
resolves Kubuntu 11.04 32-bit brightness problem
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w520, i7-2820QM, 16GB RAM, nvidia 275.19:
more acpi mess ups:
KUbuntu 11.04 32-bit: Fn + brightness up / down does not work (no hangs)
KUbuntu 11.04 64-bit: Fn + brightness up / down works, but hangs as people
reported above
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Andrew, Ubuntu 11.04 32-bit automatically installs the PAE extension so you
will be to use up to 64 GB memory. I am running 16GB RAM and tested it, see
further information here
http://ubuntuforums.org/showpost.php?p=11004403postcount=7. Also the 32-bit
Ubuntu 11.04 solved the issues with
Following the user gatman3 tip
(http://ubuntuforums.org/showpost.php?p=10977811postcount=4) have switched to
32-bit of Ubuntu 11.04 on my Thinkpad W520 and wonder oh wonder - everything is
working to the very satisfactory level, see first impression here
same issue here.
8GB mem
running 11.04 x64
~most~ of the time, the system cycles just fine. Been running 64bit out
of the gate on discrete graphics (Quadro disabled in the BIOS).
However, in the past 2-3 days, the system does not behave well when
booting from cold or warm reboot. it hangs on
It affects me too in the following configuration: Ubuntu 11.04 64-bit, Lenovo
Thinkapd W520 , dedicated graphic Nvidia 2000M selected in BIOS, Nvidia
proprietary driver installed. Running in the docking station oder with power
supply no issues, running on battery the boot process stops at the
W520 config:
Ubuntu 11.04 64 bit
12 GByte Ram
SSD + HD
Nvidia M2000
freezing on:
1. BIOS discrete + change brightness Fn+Pos1 / Fn+End
2. BIOS integrated + powersave-setting energysaving on AC after 1 hour -
never wakeup from energysaving-state (ramsleep)
3. BIOS integrated
I will add that unsurprisingly these problems exist with the dock as well. I
have through trial and error been unable to find a good stable solution with
64bit whether integrated or discrete graphics used. I am going to try the bios
update before taking more drastic measures. The ACPI ones
Adding my data point to what orGSD added to the conversation, I have 12
GB of ram, so maybe there is some threshold, say over 8 (wild guess)
where these issues manifest?
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Following up, the gnome power settings workaround helped slightly, but I
still got lots of crashes and unsuspend failures. I did end up going w/
32 bit Ubuntu 11.04 + nVidia binary driver and things are working quite
smoothly now, albeit with 1/2 the bits :-P
Changing the brightness works great
** Description changed:
Binary package hint: gnome-power-manager
I got the latest Ubuntu installed on a Lenovo W520 with graphics set to
Nvidia discrete card. The laptop freezes, however, on power-management
actions, such as brightness change and sleep/wake-up. A particularly
In my case the W520 always freezes after Grub and before reaching the
login screen when Discrete Graphics is enabled in the BIOS.
I've tried BIOS version 1.06, 1.22 and the latest 1.25 (1.25 on the
Lenovo website but 1.24 when flashed), with the same result.
I've read
I'm stuck with this issue too. I noticed through experimentation that
this doesn't happen with 32 bit 11.04. Maybe that will be a clue for
somebody? I was on the verge of moving to the 32 bit version when I
discovered this launchpad bug and the workaround. Whew!
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I have the same issue on all our new W520 in the lab. Some of them have
the 1000M GPU, other the 2000M. As soon as I switch to discrete graphics
mode, I experience the issues described above. All works fine when
switching to integrated graphics. But on the other hand, when I change
brightness
more like a linux issue.
** Package changed: gnome-power-manager (Ubuntu) = linux (Ubuntu)
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Title:
[Lenovo W520] laptop freezes on ACPI-related
** Changed in: linux (Ubuntu)
Status: New = Confirmed
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Title:
[Lenovo W520] laptop freezes on ACPI-related actions
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issue is back for met to.
every time i change brightness it crashes
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Title:
Lenovo W520 laptop freezes on ACPI-related actions
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** Summary changed:
- Lenovo W520 laptop freezes on ACPI-related actions
+ [Lenovo W520] laptop freezes on ACPI-related actions
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Title:
[Lenovo
brightness adjustment still freezes my system, however i did find some
workarounds
- in gnome power management disable the function to reduce brightness when
running on battery
- you can change the brightness in the nvidia-settings tool
some other observations:
- i even tried kernel 2.6.39 and
I set my BIOS settings to match yours, but still no joy - the laptop
freezes on any operation that involves changing the display brightness.
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Wow. Everything Emil F. wrote applies to my case. I too have W520 with
1000M and when I change to discreet it freezes shortly after logging
into gnome/unity with either nvidia or nouveau driver. However it works
well with integrated card or with discreet before installing
nvidia/nouveau driver.
I updated BIOS to 1.22 but still have the same problem. I'm testing
Kubuntu (11.04) right now, and the same problem is present there as
well.
Robin: Do you have the 2000M card or the 1000M? I'm with 1000M here.
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I have the 2000m nvidia card (w520 model 4284-49G)
using 64 bit ubuntu 11.01
maybe you can try to set the same bios settings
display to discrete autodetect off
intel amt disabled
security chip inactive
memory protection off
virtualization on
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Disabling the Wireless card in the BIOS does not solve the problem for
me. Even with disabled Wireless when the laptop freezes instantly when I
change the brightness in the GUI.
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I removed the nvidia drivers coming with the distro, and installed the
latest 64bit drivers from the Nvidia website (270.41.06) just in case.
Problem still persists.
I then removed those drivers, and installed the nouveau driver via apt.
Problem still persists.
Sumary: This problem does not seem
just remembered i also did a bios update to 1.22 maybe that solved that
prob?
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Title:
Lenovo W520 laptop freezes on ACPI-related actions
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I also had this problem.
when i disable the wireless in bios the laptop works as expected.
This is a bug in the wireless driver.
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Lenovo
very strange,
i reinstalled with wireless disabled, updated, enabled wireless and
everything is ok.
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Title:
Lenovo W520 laptop freezes on
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Lenovo W520 laptop freezes on ACPI-related actions
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Forgot to add... this freeze also occurs when the system is switched
from AC to battery power, as well as when it is booted on battery. My
wild guess is that this is related to automatic change to the brightness
settings. Basically the system is not usable on battery power.
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