OK, let's summarize this:
- KDE4's "detect RandR (monitor) changes" service (part of kded4) calls
upon XRRGetScreenResources() every 10 seconds (see Tormod's comment
above, https://bugs.launchpad.net/ubuntu/+source/meta-
kde/+bug/278471/comments/15). XRRGetScreenResources() is reportedly
slow.
-
** Changed in: kdelibs
Status: Unknown => New
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** Bug watch added: KDE Bug Tracking System #173521
http://bugs.kde.org/show_bug.cgi?id=173521
** Also affects: kdelibs via
http://bugs.kde.org/show_bug.cgi?id=173521
Importance: Unknown
Status: Unknown
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You recei
I did not get flickering but I noticed spikes in Xorg every ~10 seconds.
These spikes were visibly noticeable to me during video playback. xrandr
-q does not reproduce the problem in my case, it seems to be more of a
prolonged thing compared with the spikes. Disabling "Detecting
RANDR(monitor) chan
Kubuntu 8.04 with KDE 4.1.2 workd for me without flicker.
For me (now in Intrepid) the screen flickered but Ilowman was right.
His tip helped with the flicker problem but did not solve the real problem.
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Does this issue affect kubuntu 8.04 with KDE4.1.2 (installed via
http://ppa.launchpad.net/kubuntu-members-kde4/ubuntu)?
I've been getting flickers (as if the DVI signal had been removed and
then added again). However unlike the other posts here, "xrandr -q"
does not reproduce the flicker.
Also t
I was experiencing the same flickering with my dual-monitor setup in
KDE4. I disabled the TV and TMDS-1 output (I got the names from xrandr,
which was showing them as additional outputs to LVDS and VGA), by
changing my /etc/X11/xorg.conf file with the following options:
Section "Device"
Id
AHHH! You guys rock! This totally does help. What I will do is put up a
blog post that shows up on Planet Ubuntu and Planet KDE just in case
anyone else is experiencing this problem. Great job on figuring this one
out as it has been killing me for the past few days.
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h
I can verify what iloman wrote. Disabling that service has stopped the
flickering.
For people who cannot find this option:
1. go to System settings in the menu
2. Press the Advanced tab
3. Select the Service Manager
4. Stop the Detecting RANDR(monitor) changes
5. Also tick the checkbox use, so it
Also confirming ilowman's observation killing kded4 does fix the screen
flicker for me. Then I noticed my hotkeys not working so I restarted
kded4 using krunner the screen flicker was still gone.
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I can also confirm that stopping either kded4 or the Detecting RANDR
(Monitor) changes service stops the flickering. Can anyone say what
stops working when this service is disabled? I'm guessing KDE won't be
able to detect new monitors and maybe I wouldn't be able to use an
external CRT/beamer?
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I can verify what ilowman wrote. Disabling that service has stopped the
flickering.
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I can verify what iloman wrote. Disabling that service has stopped the
flickering.
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I've found out what kded4 is now and the problem is the Detecting RANDR
(Monitor) changes service.
If you stop that service in system settings the flickering stops and kded4 can
still be run.
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I've managed to get the flickering to stop by killing the kded4 process,
unfortunately I have no idea what kded4 is for but keyboard shortcuts
seem to have stopped working! :)
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Well...I was able to get the Ubuntu Live-CD to flicker the same way as
Kubuntu. It doesn't do it at the 7 to 12 second frequency though. Only
when you do a certain function and that is:
Control Center --> Hardware --> Screen Resolution.
As soon as I click Screen Resolution, it flickers just like
I posted this on this Bug Reports as my original bug report was tagged
as duplicate and move to this one, but this bug report here sounds like
my issue. The Link --> https://bugs.launchpad.net/ubuntu/+source
/xserver-xorg-video-intel/+bug/275152
My original post:
I can verify this with my ACER
Mine disappeared for a while but has returned after a restart. I have a
Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller
(rev 03) in my Acer Laptop.
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I can confirm that after another restart mine has started flickering
again too. I spoke too soon.
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I reported the issue was solved a bit too fast.
It didn't happen anymore yesterday for some reason but it is definitely there
again today (with radeonhd)...
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Exact same results after upgrade as ibi, same card same results exactly.
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I no longer get flickering with the
00:02.1 Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller
(rev 03)
card, excepting once each logon, but I can still force it with xrandr -q. It
was fixed for me with the update on October 8th.
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KDE4 still flickers with the radeonhd driver too.
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For me neither. I have the same card as Mark and I'm still experiencing
the flickering.
00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML
Express Graphics Controller (rev 03)
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However, this was not fixed for me (00:02.1 Display controller: Intel
Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev
03))
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This was fixed for me with one of the last two days updates. A few dozen
of packages were updated so I don't know exactly which one did it.
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Is it possible to revert a (some) package(s) to a previous version until
the issue is fixed? Does anyone know which packages and where to get the
previous versions?
Any other workarounds available?
Thanks
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Also have Intel Corporation Mobile 915GM/GMS/910GML Express Graphics
Controller and have the same issue. And sometimes if I restart x it
randr will crash. Flickering still happens but it does crash.
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This is the KDE equivalent to bug #245383. A component of KDE is calling
XRRGetScreenResources excessively. And for many cards/drivers/setups
this causes a screen flicker. Although some drivers, like -ati, have
been improved to avoid flickering in many cases, the best would be to
fix KDE in the sam
I can also confirm xrandr -q reproduces the same flickering here.
00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML
Express Graphics Controller (rev 03)
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Yes, xrandr -q reproduces the same flickering on my Ati system with
radeonhd driver.
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I confirm the problem with this card
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML
Express Graphics Controller (rev 03)
And I also confirm that the same flickering is reproduced by running
xrandr -q
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I can also confirm the bug on my machine : flickering horizontal lines every
few seconds.
01:00.0 VGA compatible controller: ATI Technologies Inc RV670PRO [Radeon HD
3850]
It is *indeed* the same type of output I get when running "xrandr -q" !!
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My flickering also works like ibi's. Not vertical lines, but redrawings
of parts of the screen.
An interesting fact: I recorded a video of the desktop using
krecordmydesktop (frontend for recordmydesktop) and then I watched it in
another computer (running Windows) and there is no flickering at the
Do you get flickering when running the "xrandr -q" command? Is it the
same?
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I've got a similar issue running the Intel 910GM series as well. My flicker
seems to be redrawing elements of the desktop in different locations, not just
vertical lines.
good luck guys
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Oh, I forgot to mention: changing the resolution doesn't do any good. I can't
change refresh rate so I didn't try that. Also, disabling desktop effects
doesn't solve the problem.
Thanks.
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Same here, using Intrepid for weeks and updating daily. Didn't update
during the weekend and today's (monday's) update triggered the annoying
flickering behavior. These are the packages that were updated today:
update-motd; landscape-common; landscape-client; libgomp1; gcc-4.3-base;
libstdc++6; cp
Same here, login screen doesn't flicker, neither does Gnome session.
05:00.0 VGA compatible controller: ATI Technologies Inc Radeon HD 3850
Different display adapters and drivers - probably a Xorg or KDE4 bug.
I'm betting KDE4 - Xorg doesn't seem to have been updated for a while
and this just beg
Additional info:
The KDE4 login screen is not flickering. Once logged in, the periodical
flickering behaviour (8sec) starts.
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I can confirm this.
I have the same behaviour on my notebook (Acer Aspire 3610)
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express
Processor to DRAM Controller (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML
Express Graphics Controlle
Probably either the driver or Xorg.
** Changed in: xserver-xorg-video-radeonhd (Ubuntu)
Sourcepackagename: kdebase-workspace => xserver-xorg-video-radeonhd
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Switching kwin to metacity within KDE session doesn't seem to help, so
the culprit probably isn't kwin but something else. GNOME works fine.
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