Hi,
Just to add to my previous comment (#40). I'm still experiencing
problems and have the latest nvidia drivers installed. I tried running
unity --reset as suggested in some posts I'd read from people
experiencing similar problems. This gave the following:
WARNING: Unity currently default
Ubuntu 12.10
mine was fine until I tried enabling ati power save feature then the
flicker popped up and no matter what i have tried i can not get it to go
back to normal
even erased xorg.conf and tried purging xserver-xorg-video-*
echo dynpm /sys/class/drm/card0/device/power_method
was all I
Hi,
I've just installed a fresh version of 12.04 on my machine and am having
terrible problems with the screen flickering/going blank for several
seconds as well (it was fine with the previous 10.04 version).
lspci lists the graphics card as:
03:00.0 VGA compatible controller: NVIDIA Corporation
Hey guys,
I have a Samsung NP300V5a, and I reported the exact same issue as bug #
1028723. They decided it was the same bug as #1028151, and that is
where I have been directed to continue commenting.
In any case, I just tested the latest upstream ubuntu kernel at
Hello,
I'd also like to test the kernel at http://kernel.ubuntu.com/~kernel-
ppa/mainline/v3.6-rc1-quantal/ but really don't know how to go about it.
Can anyone please direct me to a tutorial or suggest a source for this
info? Thanks in advance.
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I still have this problem. And I use Ubuntu in my work. It's so
annoying.
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Title:
Screen flickers heavily after upgrading to 12.04 beta 1
To
Hello,
I've had the identical problem (to 18 31) on several attempted installations
of Ubuntu 12.04. Actually, no flickering but the wrong screen resolution until
I change the refresh rate from 60 (incorrect) to 75 (correct). Then
uncontrollable flickering. The wrong screen size I can live
I seem to have the same problem here. I was running ubuntu 12.04 with
kernel 3.2.0-26-generic-pae just fine on my laptop (Samsung NP530U4B)
when a kernel update came along. It updated to 3.2.0-27-generic-pae and
the flickering began. At first it all seemed fine, until the screen was
dimmed because
Dear Alex
Could you check if that bug is more like it: Bug #1028151
I have the EXACT same problem as yours (on a Samsung N310), and when I
described it in there, I have been asked to report a separate bug which was
directly reported as a Bug #1028151 duplicate.
It could help if you reiterated
Also experiencing this on a desktop running Lubuntu 12.04 with a LCD
display. Starts when log in screen appears. Flickering stops after
waiting for about 2-3 minutes.
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I think I have the same problem on my Samsung N310 netbook with 12.04
since a few days ago. The screen flickers when I boot up, it starts when
the purple screen with Ubuntu logo shows up, and doesn't seem to stop
until I play with the brightness hotkeys.
It seems to be linked with a problem that
I'm seeing the same problem on my desktop system (Dell 745), although
mine is more like #18 than some of the other descriptions. I'm running
Mint 13 (based on Ubuntu 12.04), kernel 3.2.0-26-generic. The version
of xserver-xorg-video-intel is 2:2.17.0-1ubuntu4. Mint 12 has been
working fine for
I am experiencing this bug as well. I tried upgrading the kernel and it
did not help anything. I reinstalled both 12.04 and Mint Maya several
times and the problem always persists. What can I do to try to find out
what is causing this problem?
Tim
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Hi,
after reading comment #27, I upgraded again from 11.10 to 12.04 and the problem
has disappeared almost completely.
Now there is no flickering during regular use of the laptop.
There is a small nuisance left though, don't know if it is worth fixing. Short
flickering appears during logging
Hi there,
i am using a 2730p too. I installed 12.04 and upgraded to the newest available
kernel and there isn't any flickering at my screen. The laptop has Intel
Graphics. I am using the vga output at 1080p and the laptop screen at the same
time without flickering.
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I remember that the issue appeared at my laptop with precise kernel
3.2.0-24.37. With precise kernel version = 3.2.0-24.37 this bug
disappeared.
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just checked Kernel 3.4:
Linux ally 3.4.0-030400rc6-generic #201205061835 SMP Sun May 6 22:36:08
UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Does not solve the problem.
Andreas
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My LCD also flickers on Acer laptop with Intel Graphics. Not sure if
linked to the fact that the laptop has optimus, although not working in
ubuntu.
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For me it happens on an Nvidia GeForce 7900 GS and only since 12.04 final
(fresh install yesterday ,fully up to date with the 295.40 Nvidia
proprietaries). My monitor is an ASUS MS238. While at the jittery login screen,
the monitor reports 1920x1080@25Hz. Once logged in the monitor reports
For me its an external LCD attached to the on board VGA plug. Happens
only on this system, works on another similar system with the same VGA
controller:
VGA compatible controller: Intel Corporation 82Q963/Q965 Integrated
Graphics Controller (rev 02)
Unplugging/replugging does not help.
Andreas
I think this might help someone to track it:
After switching from HDMI cable to simple D-SUB, display is correct (no
interlce).
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Title:
Screen
Seems I have the same situation. I had been upgrading Ubuntu
successfully for years. Was currently at 11.10 when I upgraded today to
12.04. The flickering occurs when I try to log into Unity or KDE.
More specifically, I'm using two monitors. One of the monitors goes
crazy (moving the mouse
This problem will occur with kernel version 3.1 or higher on my 2730p.
For the 2730p, this seems to have been fixed, according to
https://bugs.freedesktop.org/show_bug.cgi?id=43123.
The patch mentioned there also solves another video issue, see
https://bugs.launchpad.net/gentoo/+bug/796030.
I'm not sure if my problem is exactly the same as this, but I also get
heavy flickering and graphic bugs that was not present in 11.10.
My work around:
I compiled and installed the nvidia-current package from 11.10 (version
280.13-0ubuntu6.1) for 12.04 amd64.
Then I had to add the following to
Hello
same problem for me: my system is installed for years now. Dual screen LCD with
00:02.0 VGA compatible controller: Intel Corporation 82Q963/Q965 Integrated
Graphics Controller (rev 02)
Early release of 12.04 beta was working fine.
now entering Unity / Gnome3 the main monitor starts
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Incomplete = Confirmed
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Title:
Screen flickers heavily after upgrading to 12.04
Confirmed.
My LCD screen started to flicer after installation of graphic drivers (Nvidia).
It seems the problem is somwhere before graphic driver initialization.
After switching from Auto to fixed rate 50Hz or 60Hz (Refresh rate =
NVidia XServer settings) flickering stopped.
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But, after reboot screen starts to flicker again. Ubuntu does not save, ignores
or overwrites previus setup.
In andvanced screen config (NV) system switches display to interlaced mode
every reboot
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Christos, ok. Would it be possible for you to post an Xorg.0.log,
xrandr --verbose, and dmesg from 11.10, that we can use to compare?
Might be just a change in the modeline logic.
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Yes, here they are
** Attachment added: Xorg.0.log
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/945006/+attachment/2843535/+files/Xorg.0.log
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** Attachment added: 11.10 xrandr --verbose
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/945006/+attachment/2843547/+files/xrandr.verbose
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** Attachment added: 11.10 dmesg
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/945006/+attachment/2843548/+files/dmesg
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** Tags added: flicker
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Title:
Screen flickers heavily after upgrading to 12.04 beta 1
To manage notifications about this bug go to:
I tried the latest mainline kernel: 3.3.0-030300rc6-generic-pae
Flickering is still there and unchanged.
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Title:
Screen flickers heavily after
You mentioned this started after installing beta1. Did you have linux
installed on the system prior to that? If so, what is the most recent
version where you did *not* see the flickering?
** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided = High
** Tags removed:
I run this machine with Ubuntu for a couple of years. The most recent
version was 11.10. I upgraded to 12.04 beta 1 and flickering started. I
installed 11.10 again and flickering stopped. Today I install 12.04 beta
again and then installed mainline kernel RC6 and there is still heavy
flickering/
Try with the latest precise kernel (-18), and if it isn't better, try a
mainline kernel from here:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3-rc6-precise/
** Package changed: xorg (Ubuntu) = xserver-xorg-video-intel (Ubuntu)
** Changed in: xserver-xorg-video-intel (Ubuntu)
The flickering one I mean
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Title:
Screen flickers heavily after upgrading to 12.04 beta 1
To manage notifications about this bug go to:
Hello, is this a crt monitor or a LCD ?
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** Package changed: ubuntu = xorg (Ubuntu)
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The monitor that flickers is the built-in LCD display of the laptop (HP
Elitebook 2730p).
I booted 12.04 B1 with nomodeset boot option and there was no flickering (but
otherwise wrong display resolution).
I reverted to 11.10, and the flickering stopped.
I will install 12.04 B1 from scratch,
I booted a live usb stick with 12.04 Beta 1 on the laptop, and the
screen flickers when the installer starts.
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Title:
Screen flickers heavily
** Changed in: xorg (Ubuntu)
Status: Incomplete = New
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Title:
Screen flickers heavily after upgrading to 12.04 beta 1
To manage
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Title:
Screen flickers heavily after upgrading to 12.04 beta 1
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Hello
From BootDmesg.log
[0.00] Your BIOS is broken; DMAR reported at address 0!
[0.00] BIOS vendor: Hewlett-Packard; Ver: 68POU Ver. F.08; Product
Version: F.08
can you try to fix this on first ?
Thanks
Fabio
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Hi,
The flickering appeared only after I installed 12.04 beta 1, so I think the
BIOS is broken warning is unrelated.
Also when I connect an external monitor to the VGA port, the flickering
disappears completely. It seems to me that this is a problem of graphics
drivers.
Thanks
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