annoying unexpected red strips on screen

Kevin Oberman rkoberman at gmail.com
Sun Mar 31 18:26:33 UTC 2013


On Sun, Mar 31, 2013 at 1:55 AM, Justin Yang <YZMSQ at 163.com> wrote:
> These days I found some quirks about this issue. The red strips are only
> within some applications' windows themselves, which had never been seen in
> my Opera browser, while only shown in other applications, such as Firefox,
> eclipse, chromium and so on.
>
> On Sat, 23 Mar 2013 17:09:22 +0800,Justin Yang <yzmsq at 163.com> wrote:
>
> Hi,
> Thank you for your reply. I'm now wondering whether the "red strips" (maybe
> aroused by KMS) will dampen my Sandy Bridge Graphics chip. If not, I believe
> I can ignore this issue temporarily 'cause it only happens occasionally.
>
>
> At 2013-03-23 14:15:40,"Kevin Oberman" <rkoberman at gmail.com> wrote:
>>On Fri, Mar 22, 2013 at 9:52 AM, Justin Yang <linuxjustin at gmail.com> wrote:
>>> Oh, I'm sorry but the picture of "The annoying strips" should be this
>>> one:
>>> http://i49.tinypic.com/2q3og03.png
>>>
>>>
>>>> Hi, all:
>>>> I'm now suffering some "unexpected red strips" on the screen, which
>>>> frustrates me a lot. My box runs on a sandy bridge chip, and I've
>>>> installed
>>>> the latest xorg and Intel graphics drivers related ports from xorg-dev.
>>>> It
>>>> runs quite well except the red strips shown on my screen unexpectedly
>>>> sometimes (not always, though). I also tried the xorg from our official
>>>> ports tree but nothing improved (even worse).
>>>>
>>>> BTW, I only install the xorg related and Intel graphics drivers from
>>>> source code (ports tree), while others, such as firefox, eclipse, are
>>>> installed from pre-compiled packages directly from this site:
>>>> http://dev.bsdrp.net/pkg/freebsd:9:x86:32/desktop/
>>>>
>>>> What I've installed:
>>>> justin at darkgeek.pts/0 ~ % pkg info | grep -i xorg
>>>> linux-f10-xorg-libs-7.4_1      Xorg libraries (Linux Fedora 10)
>>>> xorg-fonts-truetype-7.5.1      X.Org TrueType fonts
>>>> xorg-minimal-7.5.2             X.Org minimal distribution metaport
>>>> xorg-server-1.12.4,1           X.Org X server and related programs
>>>> justin at darkgeek.pts/0 ~ % pkg info | grep -i libgl
>>>> libGL-8.0.5_3                  OpenGL library that renders using GLX or
>>>> DRI
>>>> libGLU-8.0.5                   OpenGL utility library
>>>> libglade2-2.6.4_5              GNOME glade library
>>>> justin at darkgeek.pts/0 ~ % pkg info | grep -i intel
>>>> xf86-video-intel-2.21.4        Driver for Intel integrated graphics
>>>> chipsets
>>>> justin at darkgeek.pts/0 ~ % pkg info | grep -i dri
>>>> dri-8.0.5_3,2                  OpenGL hardware acceleration drivers for
>>>> the DRI
>>>> dri2proto-2.8                  DRI2 prototype headers
>>>> libGL-8.0.5_3                  OpenGL library that renders using GLX or
>>>> DRI
>>>> xf86-input-keyboard-1.6.2      X.Org keyboard input driver
>>>> xf86-input-mouse-1.8.1         X.Org mouse input driver
>>>> xf86-video-intel-2.21.4        Driver for Intel integrated graphics
>>>> chipsets
>>>> xf86-video-vesa-2.3.2          X.Org vesa display driver
>>>> justin at darkgeek.pts/0 ~ % pkg info | grep -i libdrm
>>>> libdrm-2.4.42_1                Userspace interface to kernel Direct
>>>> Rendering Module services
>>>> justin at darkgeek.pts/0 ~ % uname -a
>>>> FreeBSD darkgeek 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243826: Tue Dec  4
>>>> 06:55:39 UTC 2012
>>>> root at obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
>>>>
>>>> The annoying strips:
>>>> http://i50.tinypic.com/260sgac.png
>>>>
>>>> And one more annoying thing:
>>>> http://i50.tinypic.com/260sgac.png
>>>>
>>>> More details will be provided when needed. Any help is appreciated.
>>>> Thank
>>>> you in advance:)
>>>
>>
>>I see the same thing on my Sandybridge system. I've been seeing it
>>since I first installed KMS code. Others suggestion I am infected by
>>"The Matrix", but it's red, not green. They may appear in any window
>>and I can often eliminate it by selecting the "infected" area and then
>>de-selecting. Yours is the only other report I've seenof this problem.
>>While I'd love to get this fixed, getting console mode back would be
>>even nicer.
>>
>>I also occasionally get other artifacts like a few lines of test
>>getting darker. I suspect it is being written to the screen twice with
>>a single pixel offset, but I can't confirm.
>>
>>9.1-Stable (r246004M) amd64 system. Sandybridge with no nVidia support
>>card. Pure Intel GPU. ThinkPad T520. All xorg is from ports and this
>>has happened since I installed the KMS support..

I can confirm that they show up in specific windows, not the scree
itself and I see them most often in Firefox, but I have also seen them
in gnome-terminals and most any other including the wallpaper, which
is, after all, just a window that happens to cover the entire screen
and has no borders or decorations.
-- 
R. Kevin Oberman, Network Engineer
E-mail: rkoberman at gmail.com


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