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Thread: APPARENT SCREEN FLICKER

  1. #1

    Lightbulb APPARENT SCREEN FLICKER

    openSUSE 11.3 KDE

    There is a frequent flicker on my screen.
    Some application OR notification just pops and disappears( giving an impression of a flicker ).
    How do i find out which application OR notification is it .
    Thanks in advance.

  2. #2

    Default Re: APPARENT SCREEN FLICKER

    anyone pleaase ?? :-(

  3. #3
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    Default Re: APPARENT SCREEN FLICKER

    oneloneclone wrote:
    > anyone pleaase ?? :-(


    you don't give nearly enough to even begin to understand the
    problem....like:

    -is this a new fresh, first time install of 11.3?
    -or did you install it over 11.2?

    -is it a dual boot machine?

    -how much linux experience do you have?

    -did you do this before the install: http://tinyurl.com/25ydj4a and if
    you did was the install media 100% perfect? if you didn't do that, do
    it now, please

    -did your install ever work correctly?

    -when did it change? (like immediately after a new kernel, or update,
    or you changed something in how KDE is supposed to look, like turned
    on desktop effects, or or or or)

    -what graphics do you have? are you running the video driver which was
    installed, or have you changed it? (from what, to what?) and, did this
    flicker begin after that update?

    you say something is causing a pop up which flickers out of
    sight...tell me, is it flickering to the center of the screen? and are
    you running an application full screen, and with KDE set to
    automatically give focus to what is under the mouse? if so, either put
    your mouse in the center (so the popup will keep focus) OR don't run
    whatever app you have covering the desktop in full screen mode (so you
    can see behind the full screen app) OR, next time you see the
    "flicker" quick minimize the full screen app and maybe the dialog will
    still be there, behind whatever was covering it..

    i tell you what, it is gonna be impossible for me to look in my
    crystal ball here, and see what you see there, so you are gonna have
    to do better at describing than you have....can you, for example use a
    cell phone/web cam/camcorder/whatever to record this flicker, and then
    upload it to somewhere (youtube) and post the URL here??

    --
    DenverD
    When it comes to chocolate, resistance is futile.
    CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]

  4. #4

    Default Re: APPARENT SCREEN FLICKER

    I am sorry for not giving enough details.
    Here are the details -
    openSUSE 11.3 KDE 4.4.4 installed using the LiveCD on Dell Inspiron 1545.
    The LiveCD was perfect, both MD5 and SHA1 matched.
    I was using 11.2 KDE(dual boot with Vista) previously. I now have done a CLEAN install of 11.3.(Dual boot with Vista)
    I am using the DEFAULT video drivers.
    As soon as I booted the system,I installed the updates.(So i am unsure if the updates caused it)(But i did not experience flickers when i tested it out using the LiveCD)
    I am using compositing with Kwin-window manager.
    I made sure that Focus policy is set to "CLICK TO FOCUS".
    The flicker covers the bottom half of the screen.(it occurs RANDOMLY , even when not using full screen apps).

    Thanks in advance.

  5. #5
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    Default Re: APPARENT SCREEN FLICKER

    oneloneclone wrote:
    > I am sorry for not giving enough details.
    > Here are the details -
    > openSUSE 11.3 KDE 4.4.4 installed using the LiveCD on Dell Inspiron
    > 1545.
    > The LiveCD was perfect, both MD5 and SHA1 matched.
    > I was using 11.2 KDE(dual boot with Vista) previously. I now have done
    > a CLEAN install of 11.3.(Dual boot with Vista)
    > I am using the DEFAULT video drivers.
    > As soon as I booted the system,I installed the updates.(So i am unsure
    > if the updates caused it)(But i did not experience flickers when i
    > tested it out using the LiveCD)
    > I am using compositing with Kwin-window manager.
    > I made sure that Focus policy is set to "CLICK TO FOCUS".
    > The flicker covers the bottom half of the screen.(it occurs RANDOMLY ,
    > even when not using full screen apps).
    >
    > Thanks in advance.



    this is important: i do _not_ know what is causing your problem (so,
    any real guru reading this is WELCOME to jump in)...but, as you
    describe it i can say that i have never seen something like this:

    SYMPTOM: randomly the bottom half of the screen is suddenly filled
    with the output of some application or notification which disappears
    so quickly it is like a flicker

    however, though know for sure i _think_ the cause is video driver..

    so, lets get even more info (so the real guru doesn't have to ask):

    tell us about your graphics card and driver (i know you DEFAULT, but
    default what? should be easy to find in "My Computer"...sure i might
    be able to google up that info but why should i?)

    and, do you have desktop effects enabled? if you do, disable it--do
    the flickers stop?

    *if* my guess is correct then you can probably find the path to
    happiness here: http://tinyurl.com/2vsv4rh

    let us know, please...

    --
    DenverD
    When it comes to chocolate, resistance is futile.
    CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]

  6. #6
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    Default Re: APPARENT SCREEN FLICKER

    What interests me, is the videocard and whether you kept /home from the previous install. Could you post that?
    ° Appreciate my reply? Click the star and let me know why.

    ° Perfection is not gonna happen. No way.

    https://en.opensuse.org/openSUSE:Board#Members
    http://en.opensuse.org/User:Knurpht
    http://nl.opensuse.org/Gebruiker:Knurpht

  7. #7

    Default Re: APPARENT SCREEN FLICKER

    NO I did not retain the /home folder from 11.2, I formatted the previous /home partition DURING the installation of opensuse11.3

    I am using Dell Inspiron 1545. with 'Mobile Intel GM45 Express chipset'.
    The graphics controller is 'Mobile 4 Series Chipset Integrated Graphics Controller'
    [(Mobile Intel Graphics Media Accelerator (GMA) 4500MHD)]
    sysinfo:/ also gives the info that the 2D driver is 'intel' and 3D driver is 'Unknown Classic 7.8.2'

    Yast->Hardware Information lists the driver as 'i915' and the kernel driver is 'drm'.
    YAST Software Management says that xorg-x11-driver-video-intel-legacy is installed and the version is 2.9.1-1.9-x86-4 vendor openSUSE


    OUTPUT OF cat /var/log/Xorg.0.log | grep '('II')'' 'intel
    According to oldcpu's post, occurence of intel(0) ,like it happens below, means that i am using the open source intel driver.
    Code:
    [    22.335] (II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
    [    22.417] (II) intel(0): Creating default Display subsection in Screen section
    [    22.417] (II) intel(0): Integrated Graphics Chipset: Intel(R) GM45
    [    22.433] (II) intel(0): Output VGA1 using monitor section Default Monitor
    [    22.535] (II) intel(0): Output LVDS1 has no monitor section
    [    22.535] (II) intel(0): found backlight control interface /sys/class/backlight/acpi_video0
    [    22.543] (II) intel(0): Output DP1 has no monitor section
    [    22.559] (II) intel(0): EDID for output VGA1
    [    22.661] (II) intel(0): EDID for output LVDS1
    [    22.661] (II) intel(0): Manufacturer: SEC  Model: 5441  Serial#: 0
    [    22.661] (II) intel(0): Year: 2008  Week: 0
    [    22.661] (II) intel(0): EDID Version: 1.3
    [    22.661] (II) intel(0): Digital Display Input
    [    22.661] (II) intel(0): Max Image Size [cm]: horiz.: 34  vert.: 19
    [    22.661] (II) intel(0): Gamma: 2.20
    [    22.661] (II) intel(0): No DPMS capabilities specified
    [    22.661] (II) intel(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 
    [    22.661] (II) intel(0): First detailed timing is preferred mode
    [    22.661] (II) intel(0): redX: 0.580 redY: 0.340   greenX: 0.310 greenY: 0.550
    [    22.661] (II) intel(0): blueX: 0.155 blueY: 0.155   whiteX: 0.313 whiteY: 0.329
    [    22.661] (II) intel(0): Manufacturer's mask: 0
    [    22.661] (II) intel(0): Supported detailed timing:
    [    22.661] (II) intel(0): clock: 72.3 MHz   Image Size:  353 x 198 mm
    [    22.661] (II) intel(0): h_active: 1366  h_sync: 1414  h_sync_end 1446 h_blank_end 1526 h_border: 0
    [    22.661] (II) intel(0): v_active: 768  v_sync: 770  v_sync_end 775 v_blanking: 790 v_border: 0
    [    22.661] (II) intel(0): Supported detailed timing:
    [    22.661] (II) intel(0): clock: 72.3 MHz   Image Size:  344 x 194 mm
    [    22.661] (II) intel(0): h_active: 1366  h_sync: 1414  h_sync_end 1446 h_blank_end 1526 h_border: 0
    [    22.661] (II) intel(0): v_active: 768  v_sync: 770  v_sync_end 775 v_blanking: 790 v_border: 0
    [    22.661] (II) intel(0):  R801J�156AT
    [    22.661] (II) intel(0): Unknown vendor-specific block 0
    [    22.661] (II) intel(0): EDID (in hex):
    [    22.661] (II) intel(0):     00ffffffffffff004ca3415400000000
    [    22.661] (II) intel(0):     00120103902213780a87f594574f8c27
    [    22.661] (II) intel(0):     27505400000001010101010101010101
    [    22.661] (II) intel(0):     010101010101411c56a0500016303020
    [    22.662] (II) intel(0):     250061c61000001a411c56a050001630
    [    22.662] (II) intel(0):     3020250058c21000001a000000fe0052
    [    22.662] (II) intel(0):     3830314a8031353641540a2000000000
    [    22.662] (II) intel(0):     00000000000000000001010a20200036
    [    22.662] (II) intel(0): Not using default mode "320x240" (doublescan mode not supported)
    [    22.662] (II) intel(0): Not using default mode "400x300" (doublescan mode not supported)
    [    22.662] (II) intel(0): Not using default mode "400x300" (doublescan mode not supported)
    [    22.662] (II) intel(0): Not using default mode "512x384" (doublescan mode not supported)
    [    22.662] (II) intel(0): Not using default mode "640x480" (doublescan mode not supported)
    [    22.662] (II) intel(0): Not using default mode "640x512" (doublescan mode not supported)
    [    22.662] (II) intel(0): Not using default mode "800x600" (doublescan mode not supported)
    [    22.662] (II) intel(0): Not using default mode "896x672" (doublescan mode not supported)
    [    22.662] (II) intel(0): Not using default mode "928x696" (doublescan mode not supported)
    [    22.662] (II) intel(0): Not using default mode "960x720" (doublescan mode not supported)
    [    22.662] (II) intel(0): Not using default mode "700x525" (doublescan mode not supported)
    [    22.662] (II) intel(0): Not using default mode "1024x768" (doublescan mode not supported)
    [    22.662] (II) intel(0): Printing probed modes for output LVDS1
    [    22.662] (II) intel(0): Modeline "1366x768"x60.0   72.33  1366 1414 1446 1526  768 770 775 790 +hsync -vsync (47.4 kHz)
    [    22.662] (II) intel(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz)
    [    22.662] (II) intel(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz)
    [    22.662] (II) intel(0): Modeline "800x600"x56.2   36.00  800 824 896 1024  600 601 603 625 +hsync +vsync (35.2 kHz)
    [    22.662] (II) intel(0): Modeline "640x480"x59.9   25.18  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz)
    [    22.667] (II) intel(0): EDID for output DP1
    [    22.667] (II) intel(0): Output VGA1 disconnected
    [    22.667] (II) intel(0): Output LVDS1 connected
    [    22.667] (II) intel(0): Output DP1 disconnected
    [    22.667] (II) intel(0): Using exact sizes for initial modes
    [    22.667] (II) intel(0): Output LVDS1 using initial mode 1366x768
    [    22.667] (II) intel(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated.
    [    22.667] (II) intel(0): Kernel page flipping support detected, enabling
    [    22.673] (II) intel(0): [DRI2] Setup complete
    [    22.673] (II) intel(0): [DRI2]   DRI driver: i965
    [    22.673] (II) intel(0): Allocated new frame buffer 1408x768 stride 5632, tiled
    [    22.684] (II) intel(0): Initializing HW Cursor
    [    22.713] (II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message.
    [    22.723] (II) intel(0): Set up textured video
    [    22.723] (II) intel(0): [XvMC] xvmc_vld driver initialized.
    [    22.723] (II) intel(0): direct rendering: DRI2 Enabled
    [    22.731] (II) intel(0): Setting screen physical size to 361 x 203
    [    24.845] (II) intel(0): EDID vendor "SEC", prod id 21569
    [    24.845] (II) intel(0): Printing DDC gathered Modelines:
    [    24.845] (II) intel(0): Modeline "1366x768"x0.0   72.33  1366 1414 1446 1526  768 770 775 790 +hsync -vsyn
    I disabled compositing and used the system for about 40 minutes and it flickered once(at the ~10th minute).Then I switched on compositing and used it for another 30 minutes and it flickered(at the 30th minute).
    I will keep switching back-and-forth and inform you again.

    Thanks a lot for your help.
    Thanks in advance.

  8. #8

    Default Re: APPARENT SCREEN FLICKER

    Just thought this info might help.My knowledge about graphic drivers is very limited. I never changed the default drivers that came with openSUSE 11.2 and i used compositing,compiz,emerald themes all without any problems.
    Is 11.3 using the same default that was used in 11.2, or have things changed ?

    Thanks.

  9. #9
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    Default Re: APPARENT SCREEN FLICKER

    oneloneclone wrote:
    > Is 11.3 using the same default that was used in 11.2, or have things
    > changed ?


    'things' (like the kernel) changes constantly (well, there have been
    three (or four, i lost count) new kernels released for 11.3 since it
    came out in July..

    and, each new kernel will/may break your driver..

    and, btw: you might be better off staying with what works (11.2) and
    hope 11.4 will work for you....or 11.5 which will be out before 11.2
    is no longer supported..

    HOWEVER, listen to Knurpht's expertise..

    --
    DenverD
    When it comes to chocolate, resistance is futile.
    CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]

  10. #10

    Default Re: APPARENT SCREEN FLICKER

    Thanks for the info.
    I will wait for Knurpht's advice.

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