** Changed in: linux
Status: Confirmed => Unknown
** Bug watch added: gitlab.freedesktop.org/drm/amd/issues #231
https://gitlab.freedesktop.org/drm/amd/issues/231
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Irreversible screen blank after inactivity even with current FOSS driver
installed. Another workaround seems to be using nomodeset. No idea what
the net difference is between that and consoleblank=0.
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a6vision - This bug has been mostly fixed in Precise - see above for a
couple of related bugs which are probably best addressed in separate,
new bug reports. As far as the LiveCD goes, you will have to wait for
Ubuntu Ubuntu 12.04.1 which is scheduled for release on 23rd August
2012. Or you can u
Ubuntu 12.04 Desktop
AMD A6-3600 APU.
HDMI/VGA video outputs.
VGA output from cpu blanks out after booting live cd.
No HDMI Monitor to test.
Has this issue been solved yet?
Still forced to use vga output to old lcd monitor.
12.04 desktop build works find under virtualbox/w*ndows 7, though und
I can confirm that setting consoleblank=0 stops the screen from becoming
unresponsive. I set the consoleblank parameter in grub and left the
computer for 30 minutes. After coming back to it, the console login
screen was still visible and I could interact with the computer as
normal.
This suggests
If Xorg is not installed then you might not be using DPMS. I found a
report which states that screen blanking on Ubuntu server can be
disabled by adding the consoleblank=0 parameter to your kernel boot
options on the GRUB command line.
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Do you know where I can find out how to disable DPMS from Ubuntu Server?
I read a how-to guide on DPMS that mentioned using "xset", but I don't
have X11 installed on this server (at least not that I know of).
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@Thomas - Thanks for your feedback - the upstream kernel developers did
add the following comment to this patch:
"radeon: initial fix for VGA on LLano system, 3 or 4 of us have spent
time debugging this, and Jerome finally figured out the magic bit the
BIOS/fglrx set that we didn't. This at least
It appears that the bug is not entirely fixed. If I leave the computer
for a while and come back to it, the screen is now blank and
unresponsive, while the numlock/capslock keys on the keyboard still
toggle so I'm guessing it's only the display that is still not working.
If I then force-reboot the
I just upgraded to linux-server 3.2.0.25.27 from precise-proposed. I can
confirm that VGA is now working without the "nomodeset" option on the
grub commandline.
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This fix is now included in Ubuntu Precise kernel 3.2.0-25.40 which is
currently in precise-proposed. Please test and report here. For
instructions on how to enable and use -proposed, see
https://wiki.ubuntu.com/Testing/EnableProposed
** Changed in: linux (Ubuntu)
Status: Triaged => Fix C
The fix in 3.4-rc5 that referenced to the freedesktop bug is
700698e7c303f5095107c62a81872c2c3dad1702
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=700698e7c303f5095107c62a81872c2c3dad1702
This one is already in stable kernel 3.2.17, so precise will get this
commit after
I tried the new Ubuntu 12.04 LTS with kernel 3.4-rc5 with different
monitor-configurations. When only a VGA connected monitor is used,
everything works fine. The monitor doesn't go to power save after
booting. This kernel seems to solve the problem of this bugreport.
But when I connect two monitor
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
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Title:
PC display will not turn on with Llano APUs connected to the VGA port
T
There is a fix in the upstream kernel 3.4-rc5 which references the
freedesktop bug linked to this bug report. This fix has also been cc'd
to stable.
A PPA of kernel 3.4-rc5 is available at http://kernel.ubuntu.com
/~kernel-ppa/mainline/
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Just wanted you to know that i tried Xubuntu 12.04 daily AMD64 from
2012-04-16 on Asus F1A55-M LE motherboard and my VGA connected monitor
still went to power save after booting from flash drive. Unfortunately i
can't test the HDMI workaround as i don't have HDMI cable and monitor
here.
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Same problem with Asus F1A75-M and A8-3870, running stock Oneiric amd64:
monitor went blank almost immediately after boot.
I don't have non-VGA monitor on site so don't know if DVI/HDMI would work.
But disabling modeset like this made text console work:
echo options radeon modeset=0 > /etc/modprob
The boot success with liveCD Ubuntu 11.04 Natty Narwhal AMD64 gave a
gnome 2 classic desktop.
Given the processing power, I would have expected booting into Unity.
That power is: The APU is AMD A6-3600 CPU combined with AMD Radeon HD
6530D GPU.
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** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
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Title:
PC display will not turn on with Llano APUs connected to the VGA port
To
Duplicate Bug #959890 testing has shown that Ubuntu 11.04 Natty Narwhal
AMD64 does NOT have this bug.
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Title:
PC display will not turn on with Lla
** Tags added: amd64 precise
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Title:
PC display will not turn on with Llano APUs connected to the VGA port
To manage notifications about this bug
I've got the same problem. Running A8-3850 APU on an ASRock A75M-HVS.
Tested with the mainline kernel 3.3-rc7. The HDMI port works fine. The
VGA port fails to work unless I boot with "nomodeset". I'm running this
with Ubuntu Server 11.10, so there is no Xorg installed.
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The same results with kernel-image 3.3.0-030300rc7-generic (effects like
comment #8 and #9). see dmesg-file attached. At the end of the file are
some more errors. maybe interesting.
** Attachment added: "dmesg-file with kernel-image 3.3.0-030300rc7-generic"
https://bugs.launchpad.net/ubuntu/+s
Launchpad has imported 12 comments from the remote bug at
https://bugs.freedesktop.org/show_bug.cgi?id=42490.
If you reply to an imported comment from within Launchpad, your comment
will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
https://hel
new try with activated xdiagnose from comment #4. The test ist with two
monitors, one on VGA-Port, and one on HDMI-Port. The monitor on VGA-Port
stay black (goes into the powersave-mode). dmesg-file see attachment.
** Attachment added: "dmesg-file with drm debug enabled via xdiagnose"
https://
** Bug watch added: freedesktop.org Bugzilla #42490
https://bugs.freedesktop.org/show_bug.cgi?id=42490
** Also affects: linux via
https://bugs.freedesktop.org/show_bug.cgi?id=42490
Importance: Unknown
Status: Unknown
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Results of test with ubuntu 12.04 beta1 and kernel-image
3.3.0-030300rc6-generic #201203032235:
- using VGA-port only: Display stay blank
- using two displays; one with HDMI-port , one with VGA-Port: Display connected
to HDMI works fine, Display connected on VGA-Port stay blank
No change with ker
I haven't tried with recent daily builds, but when I have tried with Oneiric
final, it did not help.
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Robert,
Does booting with "nomodeset" help?
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Title:
PC display will not turn on with Llano APUs connected to the VGA port
To manage notification
@Anthony Wong: can't help with that, as it fails at step 1.: can not install
12.04 as the screen turns off after GRUB.
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It may also help to enable drm debug messages before testing the kernel:
Run 'sudo xdiagnose', then tick the first checkbox, apply, wait for grub
to rebuild, then reboot the machine, reproduce the issue, and collect
/var/log/dmesg.
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Can you help us to test the latest mainline kernel to verify whether
it's already fixed in upstream? You can do that by following these
steps:
1. Install 12.04 daily build or beta
2. Download the latest mainline kernel packages from
http://kernel.ubuntu.com/~kernel-ppa/mainline/, by the time of
** Summary changed:
- PC display will not turn on in Oneiric with Llano APUs connected to the VGA
port
+ PC display will not turn on with Llano APUs connected to the VGA port
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