I've got a Hewlett Packard ProBook 4515s and Sylvains fix (#20) works.
Thanks a lot.
Will this ever be reflected in an update of Lucid ?
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Title:
So the ATI driver seems to fix the issue, but what about people on Intel
chipsets? This bug also affects Maverick fyi
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Same bug here.
Just one strange thing:
Sometimes the Brightness Keys do work as intended, and sometimes they do not.
I have not yet figured out why.
When the Brightness Keys work my dmesg | grep video only shows:
[2.385961] ACPI Warning: _BQC returned an invalid level (20090903/video-631)
Samsung R505 with HD 3400 ATI
Brightness adjustment is not possible.
I use flgrx driver.
{{{cat /proc/acpi/video/VGA/LCD/brightness}}}
says:
{{{not supported}}}
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same problem affected my HP Compaq nc6000 laptop
also left Ctrl no working :(
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on Compaq 615 w/ lucid64
- the proposed fix (#20) didn't work
- ati catalyst 10.094
downloaded from amd website
installed as described there
- solved the problem!
good luck to all the others.
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re #55: Oops, sorry: catalyst is: 10.6
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same problem on my lenovo g550 laptop bug #530238
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Silvans Fix (https://bugs.launchpad.net/ubuntu/+source/gnome-power-
manager/+bug/555122/comments/28) worked for me. My laptop is also an HP
Elitebook 8530w with nVIDIA Quadro.
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Sorry for my bad English.
I have a Packard Bell notebook Butterfly with a card Intel Corporation Mobile
4 Series Chipset Integrated Graphics Controller (rev 07) and I can not change
the brightness of the screen with the fn keys. I tried to change the brightness
with xbacklight, but without
silvan's solution (#20) worked for me, on an HP EliteBook 6930p, running
Lucid (thanks man - I've been looking for a solution to this issue for a
long time!).
Inexplicably, I still have a problem where switching to/from AC power
triggers a brightness change to a very low level. This happens if I
Silvan's solution (#20) worked perfectly for me (I have exactly the same
hardware configuration he has, but I'm running 32-bit Lucid).
Thanks Silvan!
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Silvan's solution works only for radeon driver and not work for fglrx driver
that ubuntu provide.
The new catalyst 10.5 works only when you install driver direct from GUI. This
howto: https://help.ubuntu.com/community/BinaryDriverHowto/ATI; does not work.
Finally, my Sony Vaio SR55 works.
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@C Charles #47:
Silvan's solution works only for radeon driver
Huh?
AFAIKT, the hp 8530w we both have is an Intel / nvidia machine (Quadro FX
770M)...
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Well, I try Silvan's solution/catalyst 10.5 my Sony Vaio SR55. That's what I
found on my laptop.
That's clear? Filofel
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BTW, my laptop Sony Vaio SR55 (ATI Technologies Inc M92 [Mobility Radeon HD
4500 Series]).
I'm running ubuntu 10.04 amd64.
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Toshiba Satellite a210, ATI x1200, amd64 turion t-56
Can't adjust brightness using the advice above, tried
uninstalling/reinstalling gnome power manager. It's treating my laptop
as a desktop (ie, no battery options, no dimming options).
A little help? How about a release of Ubuntu that actually
After almost screwing up my whole system I eventually managed to install
the new catalyst driver...
Would there an easier way other than follow these instructions to upgrade
catalyst?
https://help.ubuntu.com/community/BinaryDriverHowto/ATI
Otherwise whoever has trouble installing the drivers
Silvan's fix in comment #20 worked for me (HP EliteBook 6930p). I'm using the
open drivers.
For the people who tried Silvan's fix and reported no success: Is it always
because HAL is not running?
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Hell yeah, problem solved with catalyst 10.5.
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Problem solved for me also with catalyst 10.5
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Yeah!!! ATI made a good work. Problem solved for me.
Thanks ATI team :)
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Hi, everyone!
Tried out the way it is described in #20 but still nothing.
I have HP 4515s and same problem, ether :(
But tried to experiment. Just in a moment of startup (when the desktop
is shown but not all of processes are loaded) I've pressed the
Fn+F8,F7,F11 and F12 to adjust the brightness
Silvan's fix not working here on another 6735s. The only way of changing
brightness is echoing /sys/class/backlight/acpi_video0/brightness or
/proc/acpi/video/IGFX/LCD/brightness
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It seems that with new catalyst 10.5 which was released today brightness
working just fine
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There's loads of information on this now, surely a dev can take a quick
look at this?
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I have the same problem. I cannot adjust the display brightness neither
with the brightness applet, nor with the power management options from
gnome. This is annoying and a total dealbreaker for anyone using a
notebook or netbook. It sucks out much battery life because of always
having full
Same problem here with an HP 6735s, not solved by the fix suggested by
Silvan. When I hit Fn+F7/F8 I get the brightness OSD displayed once
(display unaffected) and then nothing on further button presses.
killall gnome-power-manager gnome-power-manager --verbose
Fn+f8 gives;
TI:14:23:59
That's what gnome-power-manager is reporting:
gnome-power-manager --verbose
TI:12:56:18 TH:0x854c6d8FI:gpm-brightness.c FN:gpm_brightness_up,257
- no hardware support
Is the problem related to the fact that HAL is not loaded any more? It was
working fine before the upgrade...
But
Comment #20 worked for me, but the brightness is set at 100% on battery
power, and can't change it neither with brightness applet nor Fn keys.
I've got a HP EliteBook 8530p
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Did NOT make any difference for me.
I tried several combinations. And to start with, there was no matching
entry for my vendor or product. I had to add them myself to test this
potential fix. Seems like there are several causes for the same
symptoms, as this has helped some people but not others.
Just to clarify: my _exact_ intstructions only apply for laptops made by
HP. Also I'm using the 64 bit version of ubuntu.
@phox: You are right, if HAL isn't enabled on your system in the first
place editing a HAL config file should not make any difference. In your
case the problem seems to be
silvan's solution works like a charm for me on HP Compaq 6730s.
Thank you, silvan!
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Thank you, silvan. It worked on my HP Compaq 6735b too. I am writing
below what I did. Combined from silvan's posts.
$ sudo killall gnome-power-manager
$ gnome-power-manager --verbose
I pushed brightness keys(Fn+F9/F10) on the keyboard, the brightness
scale popped up on the screen
$ lshal |
For me it's not working with a HP Compaq 615 (thats even the product
code from hal). And it won't work with the update of hald from today.
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@Chris Jepsen, I can't add as proposed by silvan, since I don't have an HP but
a Sony laptop. I had to add the lines I proposed (or maybe I made a mistake).
The file
/usr/share/hal/fdi/information/10freedesktop/10-laptop-panel-hardware.fdi
seems to tell the system that brightness is controlled
No problem, it's just that you have string= instead of
contains_outof=
Not sure how much of a difference this will make though, but it's worth
a shot.
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I fixed the bug on my HP EliteBook 8530w. The problem was the following:
HAL reported that changing the brightness was handled by hardware (which
is not the case for my laptop). Thus when I pressed the brightness keys
the gnome-power-manager simply showed the OSD and did not take further
action.
Tried to run lshal on my EliteBook 6930p and got this:
Could not initialise connection to hald.
Normally this means the HAL daemon (hald) is not running or not ready.
Adding 6930p to the file didn't help either.
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I tried
$ lshal | grep system.hardware.vendor
I got system.hardware.vendor = 'Sony Corporation'
$ lshal | grep system.hardware.product
I got system.hardware.product = 'VGN-SR29VN_S'
Then in the file
/usr/share/hal/fdi/information/10freedesktop/10-laptop-panel-hardware.fdi
I added the
Silvan, that worked perfectly for me. One reboot and now I'm back in
action and can change the brightness without a drama. Thanks a lot!
@Sylvain, try changing the file exactly as silvan describes, (ie, adding
the string to the existing line) as this is what worked for me.
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If I run hald first, it get the vendor and product string...
sudo hald
lshal | grep system.hardware.vendor
system.hardware.vendor = 'Hewlett-Packard' (string)
lshal | grep system.hardware.product
system.hardware.product = 'HP EliteBook 6930p' (string)
But how should changing a HAL
I'd love to try and make some progress on this, I'm no C programmer but
if there is anything more that I can do, such as provide more
information?
** Changed in: gnome-power-manager (Ubuntu)
Status: New = Confirmed
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The same problem on my HP Compaq 6735b. The brightness cannot be
adjusted by Fn + F7/F8. The taskbar brightness applet doesn't work as
well unfortunately. I tried on both Ubuntu 10.04 32bit and 64bit. On
Ubuntu 9.10 there were no problem with brightness adjustment.
My ATI driver is installed.
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I see the following in /var/log/messages when I try to change the
brightness via the function keys:
May 9 19:15:04 pacifica kernel: [17253.865571] ACPI Exception:
AE_AML_BUFFER_LIMIT, Index (00015) is beyond end of object
(20090903/exoparg2-445)
May 9 19:15:04 pacifica kernel:
HP EliteBook 6930p has similar issues after upgrade to 10.4. It even
managed to dim the display when plugging the AC cord IN after it was on
full brightness running on Battery. Neither FN keys nor Brightness
Applet work properly. I can't even grab the trigger, because the window
disappears on
Chris, just to clarify do you experiencing the issue with both, free and fglrx
drivers?
I haven't tried fglrx yet 'cause of incompatibility with new xorg was reported
since alpha. So I'd like to gather more feedbacks from the others before I'll
give a try to ATI's proprietary myself.
Thanks!
Good decision, fglrx consistently crashed my x-server in Alpha and Beta.
I was thinking the same thing as you, so I turned it back on to test the
brightness issue. (While fglrx doesnt crash the x-server anymore, it's
still got problems, I'm going to stick with the free one for now.)
Either way,
I have this bug in Lucid as well, on an HP 6735B with integrated ATI
graphics.
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Confirm the issue, 2.6.32-21-generic #32-Ubuntu SMP, HP 6730s, fresh
install from CD.
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Thanks tibibo, also I should mention that the HP 6730s has integrated
ATI Radeon HD 3430 graphics.
Could this be an issue with the ATI driver?
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Same problem with a Compaq 615 with Radeon HD3000. Just upgraded from
Karmic to Lucid. But I've the same issue when starting the LiveCD of
Lucid.
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I just finished upgrading from Koala to Lynx. With koala the brightness
was so bright that I needed to turn it down. With Lynx the brightness is
very dim. The Fn keys and power management brightness controls are not
working properly now. Let me describe the unusual effect.
With the Fn key at the
Same problem here on my Asus K50ij notebook. Adjusting brightness does
not work, and when pressing a few times to change it, the notification
for changing brightness appears every 15 seconds or so, but does not
increase, or decrease the brightness. now after pressing that, i plugged
in my
I forgot to mention that the graphic card is an ATI Radeon HD 3400 and I
installed proprietary drivers. I don't know if it could be the source of
problems.
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Exact problem as poster above. I tried to manually edit gnome-power-
management using gconf-config and it still doesn't work. The fn buttons
to change brightness work for me however.
Toshiba A355d with radeon 3100 card.
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Similar problem on Vaio VGN-SR after update to Lynx. it was ok with Karmic.
Cannot change brightness with either Fn+F5 or Brightness Applet. Seem like an
issue with Power Management.
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similar problem on Asus F5GL after update to Lynx. In Karmic it was OK.
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Same problem here on Vaio VGN-SR after update to Lucid Lynx.
Brightness does not change with Fn keys and Power management properties.
When doing sudo echo 52 /proc/acpi/video/VGA/LCD/brightness I've got a
permission denied error with ls -al giving
-rw-r--r-- 1 root root 0 2010-04-30 20:27
I have this problem as well. The brightness applet will display that it
has changed the brightness, however nothing changes. I can add that,
for me at least, this appears to have something to do with the drivers.
Setting brightness worked fine with the open source, but when I switched
to fglrx
I have a similar issue on my Samsung R730, the buttons I use are Fn +
Up/Down arrow. They don't seem to work and for some reason if I get into
Ubuntu and then plug my power charger in, the battery charges but I
don't get an automatically brighter screen.
To get the screen brighter, I have to
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