Marcomurk, could you please confirm this issue exists with the latest
development release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ . If the issue remains,
could you please run the following command in the development release
from a Terminal
Only the 12.10 amd64 version for me, but so lucky and random.
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Title:
Screen flickering at login screen
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I just tried with LiveUSBs with
1. Ubuntu 12.04 (Linux 3.2): installer showed garbled output, Live environment
did not show something on screen.
2. Ubuntu 12.04.1 (Linux 3.?): installer showed garbled output, Live
environment did not show something on screen.
3. Ubuntu 12.04.2 (Linux 3.5):
I get screen corruption and general problems as well (ATI Radeon HD 7650M)
Tried both free and proprietary drivers, 12.04.2 and 13.04.
The nasty workaround for me is to connect an external HDMI monitor, which helps
/fix/ the problem.
When Ubuntu tries to clone the laptop screen, this ends up
ATI Radeon HD 7650M with Ubuntu 13.04, Linux 3.9.0-raring (from
mainline) and fglrx 13.4: Still same screen corruption as with previous
kernels.
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Just tried with latest 13.10-daily
(http://cdimage.ubuntu.com/daily-live/current/saucy-desktop-amd64.iso)
and it works just fine:
1. The LiveUSB boots up and it works when I Try Ubuntu.
2. Connecting and disconnecting an HDMI monitor works as expected.
The kernel in the Ubuntu 3.10
Sure, it's a kernel issue.
Just tried with mainline Kernel 3.9.4 [0] and now the problem seems to be
solved (however, by reading the 3.9.2 kernel changelog [1], I think that the
issue was already solved in that kernel).
Does this work for you?
[0]:
Ok, here's the situation:
- problem affects all mainline kernels 3.6.10=version=3.9.1
- problem not present in mainline kernels with versions =3.6.9 or =3.9.2
Do you agree?
@UbuntuKernelTeam: should I send some kind of notification about this?
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Ok, confirmed, the latest mainline Kernels solve the issue.
However the latest ubuntu version of the kernel (today 3.5.0-32 for Ubuntu
12.10) it's still affected by the problem.
Now I'll try to check in what version of the mainline kernel the issue was
solved.
** Tags removed:
Oh, I forgot... I only tried with the open-source driver: no idea about
the situation with fglrx.
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Title:
Screen flickering at login screen
To
I experienced the same problem. The last working version of kernel was
3.5.0-21. Next version (3.5.0-22) started to give problems, there was a
regression here. I have the same symptoms as described here, and I have
exactly same hardware.
Problems occur again in 3.8.0-19.
Installing proprietary
It's a kernel issue, nothing to do with xserver-xorg-video-ati
** Package changed: xserver-xorg-video-ati (Ubuntu) = linux (Ubuntu)
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** Description changed:
On a Sony Vaio E-series with a Radeon HD7650M graphics card the screen starts
flickering black at login screen (I'm using Ubuntu 12.10 with the last updates).
It's only a video-issue: apart from this Ubuntu is properly running.
I discovered a dirty workaround for
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.9 kernel[0] (Not a kernel in the daily directory) and install both
the linux-image and linux-image-extra .deb packages.
If this bug is fixed in the
Thanks for your reply!
Tried with the mainline kernel you linked, however the problem persists...
** Tags added: kernel-bug-exists-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
** Description changed:
On a Sony Vaio E-series with a Radeon HD7650M graphics card
** Description changed:
On a Sony Vaio E-series with a Radeon HD7650M graphics card the screen starts
flickering black at login screen (I'm using Ubuntu 12.10 with the last updates).
It's only a video-issue: apart from this Ubuntu is properly running.
I discovered a dirty workaround for
** Tags added: kubuntu
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Screen flickering at login screen
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** Package changed: xorg (Ubuntu) = xserver-xorg-video-ati (Ubuntu)
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Screen flickering at login screen
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