[g45] Screen flicker/resync on X4500HD

[Chris Jones]

Binary package hint: xserver-xorg-video-intel

I have a Gigabyte GA-EG45M-DS2H (i.e. G45 graphics chip) and something about the Intel xorg driver is getting the chip very confused.

The board is connected to a Sony bravia KDL-40V3000 TV via HDMI (but the same problem exists when using the DVI port and a DVI->HDMI cable)

I see very frequent dropouts of the signal. The screen blanks briefly and comes back, with the TV then displaying the name of the input (it happens to be AV4) and the resolution (1080p).

Once this has happened, rebooting shows the problem persisting in the BIOS. This originally made me think the problem was in hardware.

However, booting Windows XP with the appropriate Intel drivers there produces a rock solid picture that never produces this resync. It's only when Windows switches into its full graphical environment that it happens, which suggests that their driver is programming the chip in a more correct way.

[Nathan MWF (tan+mc+logic)]

I saw something similar when I had the Supermicro MBD-C2SEA hooked up to a Dell 1702FP with a DVI->HDMI cable.

[Chris Jones (cmsj)]

Nathan: thanks for that, I'm confirming the bug. It's great to hear that it's not just my machine, and that it's not just related to my TV!

[Will Nowak (compbrain)]

I'm also experiencing this issue with a Gigabyte EG43M-S2H and a variety of 1080p compatible panels (Sharp, Westinghouse, Sony, etc). I've noticed that I have better luck with a DVI->HDMI cable than with the HDMI output on the motherboard directly.

[Rich Johnson (nixternal)]

I am also experiencing this problem with all of the latest updates. My only difference is this is on my Dell D830 laptop using either VGA or DVI outputs on my external monitor. Hardy this worked like a champ.

[vanegasj (jmvmoller)]

I have experienced the same as well. I have an ASUS P5Q-EM . I am glad I found this, as I had filed a separate bug but hadn't seen any response.

[MoonRise (moonrise7)]

I can verify this with my ACER 3618 laptop with 2GB RAM and the Intel GMA915. I have tested on other machines that have the GMA3100 display card and it does not occur with those, at least not that can be seen by the eye. Running Kubuntu Intrepid 8.10 up to date as of 2008-10-09 8:00am EDT. The flickering occurs between 7 and 12 seconds, do it is very periodic. Why it does not affect the GMA3100 when it is using the same driver, I'm not sure, but it could have to do how it is connecting to the GMA915 vs GMA3100. I've read of a lot of this problem on the Ubuntu and Kubuntu sites.

[Chris Jones (cmsj)]

MoonRise: This seems to be very hardware specific. I think the driver is somehow programming the chip incorrectly because once the flickering starts it doesn't stop, even rebooting into the BIOS continues to do it for me.
The only way I can stop it is by powering off, or booting Windows (and then obviously it starts again when I go back to X)

[MoonRise (moonrise7)]

Hmmm... I don't have this issue with XP, which is on this machine as a chekc in see kind of thing, but I really never noticed it in BIOS either, just when I log in to Kubuntu. When playing around with the earlier Alpha Live CDs, I never noticed a Flicker, it has started recently and to me severely. Is there anything I can add here to try and find what's going on?

[paxmark1 (mrogness)]

NOTE: THIS MIGHT NOT BE AN XORG BUG, BUT A KDE / KDM BUG.
http://kubuntuforums.net/forums/index.php?topic=3098015.30

flickers. also goes black maybe 400 ms especially when scrolling opera or firefox of scrolling with mouse in konsole. Going black does not seem to be dependent on cpu load. It happens under light or heavy cpu load.

Most annoying is that a 2 mm band that is maybe 2 cm long occurs everytime I type, but the placement on the screen can occur anywhere in the field of the web page in Opera (firefox also I believe). It is always on the left edge, but random placement top to bottom. The band appears to be black, and is more like 50 to 100 ms in duration.

/etc/X11/xorg.conf worthless for information

Section "Device"
        Identifier "Configured Video Device"
EndSection

Section "Monitor"
        Identifier "Configured Monitor"
EndSection

Section "Screen"
        Identifier "Default Screen"
        Monitor "Configured Monitor"
        Device "Configured Video Device"
EndSection

Section "ServerLayout"
        Identifier "Default Layout"

aptitude search xserver-xorg-video-intel
i A xserver-xorg-video-intel - X.Org X server -- Intel i8xx, i9xx display driver
p xserver-xorg-video-intel-dbg - X.Org X server -- Intel i8xx, i9xx display driver (debug symbols)

lspci

00:00.0 Host bridge: Silicon Integrated Systems [SiS] 650/M650 Host (rev 01)
00:01.0 PCI bridge: Silicon Integrated Systems [SiS] Virtual PCI-to-PCI bridge (AGP)
00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS962 [MuTIOL Media IO] (rev 25)
00:02.1 SMBus: Silicon Integrated Systems [SiS] SiS961/2 SMBus Controller
00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE]
00:02.6 Modem: Silicon Integrated Systems [SiS] AC'97 Modem Controller (rev a0)
00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] AC'97 Sound Controller (rev a0)
00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f)
00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f)
00:03.2 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller
00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] SiS900 PCI Fast Ethernet (rev 90)
01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 65x/M650/740 PCI/AGP VGA Display Adapter

monitor samsung syncmaster 720n
onboard intel 810 video card
Ubuddie intel 2.4 ghz celeron 512 mb total ram

[paxmark1 (mrogness)]

btw, the skinny black band that appears when typing also appears on the desktop when typing in konsole or abiword or open office. Always on the left edge.

[paxmark1 (mrogness)]

I updated and upgraded (safe)
New xorg and kdm No change in behaviour.

interesting in KDM log is that

1. the xorg build is Build Operating System: Linux 2.6.24-19-server i686 Ubuntu

2. Current Operating System: Linux ubuntu 2.6.27-7-generic #1 SMP Fri Oct 10 03:55:24 UTC 2008 i686

NOTE: I AM A HARDYUPGRADE FROM A ONE CORE CELERON 2.4 mhz.

attached is some KDM logs (screen just went black again)

X.Org X Server 1.5.1
Release Date: 23 September 2008
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.24-19-server i686 Ubuntu
Current Operating System: Linux ubuntu 2.6.27-7-generic #1 SMP Fri Oct 10 03:55:24 UTC 2008 i686
Build Date: 10 October 2008 11:01:44AM
xorg-server 2:1.5.1-1ubuntu3 (<email address hidden>)
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
Module Loader present
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Fri Oct 10 20:18:09 2008
(==) Using config file: "/etc/X11/xorg.conf"
(WW) SIS: No matching Device section for instance (BusID PCI:0@0:0:0) found
(WW) SIS: No matching Device section for instance (BusID PCI:0@0:1:0) found
(WW) SIS: No matching Device section for instance (BusID PCI:0@0:2:0) found
(WW) SIS: No matching Device section for instance (BusID PCI:0@0:2:1) found
(WW) SIS: No matching Device section for instance (BusID PCI:0@0:2:5) found
(WW) SIS: No matching Device section for instance (BusID PCI:0@0:2:6) found
(WW) SIS: No matching Device section for instance (BusID PCI:0@0:2:7) found
(WW) SIS: No matching Device section for instance (BusID PCI:0@0:3:0) found
(WW) SIS: No matching Device section for instance (BusID PCI:0@0:3:1) found
(WW) SIS: No matching Device section for instance (BusID PCI:0@0:3:2) found
(WW) SIS: No matching Device section for instance (BusID PCI:0@0:4:0) found
kdmgreet(4991) KLocalePrivate::initEncoding: Cannot resolve system encoding, defaulting to ISO 8859-1.
T

The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning: Duplicate shape name ""
> Using last definition
> Warning: Duplicate shape name ""
> Using last definition
> Warning: Duplicate shape name ""
> Using last definition
> Warning: Duplicate shape name ""
> Using last definition
> Warning: Duplicate shape name ""
> Using last definition
> Warning: Duplicate shape name ""
> Using last definition
> Warning: Duplicate shape name ""
> Using last definition
> Warning: Duplicate shape name ""
> Using last definition
> Warning: Duplicate shape name ""
> Using last definition
> Warning: Duplicate shape name ""
> Using last definition
> Warning: Duplicate shape name ""
> Using last definition
> Warning: Duplicate shape name ""
> ...

[MoonRise (moonrise7)]

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 mine is doing under Kubuntu. The only difference is that is stops once the Screen Resolution window appears.

[Julian Edwards (julian-edwards)]

Also happens for me, Dell D630 laptop (64 bit) with Intel GMA 965. I just upgraded from Kubuntu Hardy to Intrepid so I've no idea if this is KDE4 related.

It looks like DPMS is kicking in briefly. The laptop's screen stays on while this happens.

I made it stable by using xrandr to a lower resolution and then xrandr back to the native VGA resolution (1920x1200 in my case).

[Adric Riedel (adric-riedel)]

My laptop has this problem (filed duplicate bug report by accident). It's an Inspiron 6000 running Ubuntu Intrepid 32bit; Intel 915 Graphics, and the thing flickers every 5 to 7 seconds, as pointed out here.

I had this thing connected to a projector earlier today (no problems with detection; it automatically resized the displays to 1024x768 and so on) and the flicker manifested as the overhead projector losing the laptop's signal every seven seconds or so. As far as I can recall the laptop screen itself was absolutely stable while this was going on; the "NO SIGNAL ON RGB 1" just kept popping up every seven seconds, for one second.

Unlike the OP, I ONLY see this problem while running X. The display is perfectly solid all the way through the BIOS to the Kubuntu setup screens, to KDM itself where the problem begins. On shutdown, the display is stable as far as I can tell; shutdown is fast and requires a few mode changes of its own.

[dipsol (martin-diphoorn)]

I have the same problem on my Latitude D820 with intel chipset.

lspci |grep VGA gives the folowing:
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)

It's starts after the login screen. It starts flickering every 10 seconds on the second screen. And it never stops.
My laptop screen is stable. The resolution i use on both screens are: 1680x1050
I use xrandr for using dualscreen, but even disabling that doesn't stop the flickering.

There are no updates available at the moment, so i'm working on the latest version of Intrepid.

[Adric Riedel (adric-riedel)]

I managed to mostly solve the problem; on page 5 of the link paxman1 posted (http://kubuntuforums.net/forums/index.php?topic=3098015.60) someone named ilowman suggested going to System Settings->Advanced->Service Manager and turning off "Detecting RANDR (monitor) changes"

The effect was immediate; my screen now flickers only when loading KDE4.1, and when opening System Settings->Display. This seems to solve the glitches where the screen briefly redraws in a shifted position from normal; the people at that link seemed to think there are two kinds of graphical glitches going on here.

One downside, however, is that while I can still switch screen resolutions to 1024x768 (and possibly others) I cannot switch back; I lost my first draft of this comment when X restarted instead.

[MoonRise (moonrise7)]

Just to try and link some of these all together, here is another Bug Report that is similar where some more of the RANDR service is mentioned.

https://bugs.launchpad.net/ubuntu/+source/meta-kde/+bug/278471

[Chris Jones (cmsj)]

I think if you're seeing bug 278471's comments helping you then you're seeing a different bug to this one. I'm fairly sure this is only relevant on G45 (X4000) systems

[dipsol (martin-diphoorn)]

Yep, you're right this is a different situation. The fix that was mentioned here fixed my problems. Thanks guys!

[André (andred-ubuntu-deactivatedaccount-deactivatedaccount)]

I see this too on a Asus P5Q-EM motherboard (uses G45 chipset). As a workaround, one can you the Vesa driver, just like in Hardy,

[madnux (madnux)]

I confirm this:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/275152/comments/16

System Settings->Advanced->Service Manager and turning off "Detecting RANDR (monitor) changes"

On KDE4 it's in tha settings window.

I turn it off the service and the screen see correctly.

[Kai Jauch (kaijauch)]

I can trigger a screen blanking (apart from the ones regularly happening by themselves) by just executing xrandr without any parameters. Note that only the external display (DVI) blanks when I do that, the internal display of my Latitude E6400 works without any problems.

[TWO (two)]

I confirm this:
 https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/275152/comments/16
System Settings->Advanced->Service Manager and turning off "Detecting RANDR (monitor) changes"
On KDE4 it's in tha settings window.
I turn it off the service and the screen see correctly.

--------------------------------------

I also confirm that turning off the service in question stops the screen flickering with immediate effect. This is on a Dell Inspiron 1300 with Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03) display controller.

[Chris Jones (cmsj)]

KDE flickering on older 9x5 chipsets is a different bug to this one, that's a high level desktop bug where KDE is doing something wrong with Xrandr.
This bug is about flickering on very new chipsets (e.g. in my case it's a G45, or X4500HD depending on your choice of terminology).

[Dri (michael-mattsson)]

I have this problem aswell. Asus P5Q-EM with G45 chipset. VGA output works fine. With DVI output I can easily reproduce the flickering by opening 2 terminal windows and do a "find /" in both of them. Lowering the resolution one step stops the flickering but not a viable resolution.

I've tested both the distro supplied libdrm2 and intel driver aswell as the ones supplied here: (drm 2.4.0 and intel 2.5) http://ppa.launchpad.net/xorg-edgers/ubuntu/pool/main/libd/libdrm/ http://ppa.launchpad.net/thjaeger/ubuntu/pool/main/x/xserver-xorg-video-intel/

People are referring to worked around this bug by disabling the xrandr extension, how do I accomplish that?

[robguthrie (rob-dudsbabyduds)]

I have this flickering problem also. Intel 945 on sony vaio.

Hope this helps

X.Org X Server 1.5.2
Release Date: 10 October 2008
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.24-19-server i686 Ubuntu
Current Operating System: Linux vaio 2.6.27-7-generic #1 SMP Tue Nov 4 19:33:20 UTC 2008 i686
Build Date: 24 October 2008 08:00:16AM
xorg-server 2:1.5.2-2ubuntu3 (<email address hidden>)
 Before reporting problems, check http://wiki.x.org
 to make sure that you have the latest version.
Module Loader present
Markers: (--) probed, (**) from config file, (==) default setting,
 (++) from command line, (!!) notice, (II) informational,
 (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Fri Nov 7 15:03:42 2008
(==) Using config file: "/etc/X11/xorg.conf"
(==) No Layout section. Using the first Screen section.
(**) |-->Screen "Default Screen" (0)
(**) | |-->Monitor "Configured Monitor"
(**) | |-->Device "Configured Video Device"
(==) Automatically adding devices
(==) Automatically enabling devices
(==) No FontPath specified. Using compiled-in default.
(WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
 Entry deleted from font path.
(==) FontPath set to:
 /usr/share/fonts/X11/misc,
 /usr/share/fonts/X11/100dpi/:unscaled,
 /usr/share/fonts/X11/75dpi/:unscaled,
 /usr/share/fonts/X11/Type1,
 /usr/share/fonts/X11/100dpi,
 /usr/share/fonts/X11/75dpi,
 /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType
(==) ModulePath set to "/usr/lib/xorg/modules"
(II) Cannot locate a core pointer device.
(II) Cannot locate a core keyboard device.
(II) The server relies on HAL to provide the list of input devices.
 If no devices become available, reconfigure HAL or disable AllowEmptyInput.
(II) Open ACPI successful (/var/run/acpid.socket)
(II) Loader magic: 0x81d9a40
(II) Module ABI versions:
 X.Org ANSI C Emulation: 0.4
 X.Org Video Driver: 4.1
 X.Org XInput driver : 2.1
 X.Org Server Extension : 1.1
 X.Org Font Renderer : 0.6
(II) Loader running on linux
(++) using VT number 7

(--) PCI:*(0@0:2:0) Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller rev 3, Mem @ 0xb0080000/0, 0xc0000000/0, 0xb0040000/0, I/O @ 0x00001800/0
(--) PCI: (0@0:2:1) Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller rev 3, Mem @ 0x6c000000/0
(II) System resource ranges:
 [0] -1 0 0xffffffff - 0xffffffff (0x1) MX[B]
 [1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B]
 [2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B]
 [3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B]
 [4] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B]
 [5] -1 0 0x00000000 - 0x00000000 (0x1) IX[B]
(II) LoadModule: "extmod"

(II) Loading /usr/lib/xorg/modules/extensions//libextmod.so
(II) Module extmod: vendor="X.Org Foundation"
 compiled for 1.5.2, module version = 1.0.0
 Module class: X.Org Server Extension
 ABI class: X.Org Server Extension, version 1.1
(II) Loading extension SHAPE
(II) Loading extension MIT-SUNDRY-NONSTANDARD
(II) Loading extension BIG-REQUESTS
(II) Loading extension SYNC
(II) Loading extension MIT-SCREEN-SAVER
(II) Loading extension XC-MISC
(II) Loading extension XFree86-VidModeExtension
(...

[Brian Harkness (maestro-bwh)]

Adric Riedel > Fix of unchecking this option helped me as well.

[Nicholas A. Suppiah (t-boxmy)]

Stopping the service "Detecting RANDR (monitor) changes" as mentioned in the fix of this page solved my problem.

I am having a VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)

[Kai Jauch (kaijauch)]

I was able to stop the flickering with my Samsung SyncMaster 214T (connected via DVI) and the X4500HD.
xrandr --verbose lists two modes for 1600x1200. Using the "preferred" one (which is selected automatically on startup) causes flickering, using the other one has worked fine for the last 40 minutes.

Relevant lines from xrandr --verbose:
  1600x1200 (0x49) 162.0MHz +HSync +VSync +preferred
        h: width 1600 start 1664 end 1856 total 2160 skew 0 clock 75.0KHz
        v: height 1200 start 1201 end 1204 total 1250 clock 60.0Hz
  1600x1200 (0x4a) 161.0MHz -HSync +VSync *current
        h: width 1600 start 1704 end 1880 total 2160 skew 0 clock 74.5KHz
        v: height 1200 start 1201 end 1204 total 1242

Mode 0x4a works without flickering.

[Kai Jauch (kaijauch)]

I've been using mode 0x4a for over an hour now. The flickering is not completely gone, but significantly reduced. It happened only a few times in over an hour as opposed to every few minutes with mode 0x49.

[manler (mathias-anler)]

Hello,

I am having the same trouble with Asus p5q-em. Im running gnome and I haven't found a way to stop the flickering. Has anyone found a solution that works with gnome?

My bug report is located here --> https://bugs.launchpad.net/bugs/303720

I tried the tip from Kai to change the mode but that didn't do anything for me.

[Jason Mock (mockjv)]

I also have the issue on a Toshiba Satellite M55-S3512 which lspci reports I have a "00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)". As soon as I disabled the RANDR service in KDE it's fine.

[Bryce Harrington (bryce)]

[This is an automatic notice.]

We'd like to forward your bug upstream, however upstream requires
that you first test it against their newer driver code.

To save you the effort of building the driver from source, we've built
packages for the driver and its new dependencies.

So you have a couple options:

 1. Download and test .debs for intrepid, from:
     https://edge.launchpad.net/~intel-gfx-testing/+archive

 -or-

 2. Download and test the Jaunty alpha-2 (or newer) Live CD,
     (which includes a beta of the new xserver 1.6 as well).
     See http://cdimage.ubuntu.com/releases/9.04/ for ISOs

Thanks ahead of time! You can simply reply to this email to report your
findings.

P.S., if you wish to forward your bug upstream yourself, please follow
these directions to do so:
  http://intellinuxgraphics.org/how_to_report_bug.html

[André (andred-ubuntu-deactivatedaccount-deactivatedaccount)]

See the below link for an already reported upstream bug about this issue:

http://bugs.freedesktop.org/show_bug.cgi?id=17805

[mnk0 (samad-omar)]

OK, confirming the BUG, running ubuntu ibex 8.10 , Intel Core2 Duo e7400, Asus P5Q-EM with HDMI out cable,
when running this with a VGA cable, no flickering at all, and only since using the HDMI out on the Motherboard have i started seeing the flickering.

[SirAry (theodor-scherer)]

Confirming the bug on 9.04 too. VGA works ok, when switching to HDMI i get image for a blink, and after fall in black, and so on ... asus P5Q-EM here.
In 8.10 somehow I get it to work ... I think it was selecting a LCD generic panel somewhere and resolution i wanted ...
in 9.04 I am blocked ... :(

[Bryce Harrington (bryce)]

From the upstream bug it sounds like this is considered fixed as of 2.6.99.903.

@Chris Jones, feel free to reopen this bug (and the upstream bug) if it still occurs in Karmic.

@everyone else, if you're still seeing the behavior, please file a new bug.

[mnk0 (samad-omar)]

Bryce,, how is it confirmed as being fixed when there are still so
many reports of it not working?

is there a manual method to fix this issue?

--
Omar Samad

On Tue, Jun 2, 2009 at 6:51 PM, Bryce Harrington
<email address hidden> wrote:
> >From the upstream bug it sounds like this is considered fixed as of
> 2.6.99.903.
>
> @Chris Jones, feel free to reopen this bug (and the upstream bug) if it
> still occurs in Karmic.
>
> @everyone else, if you're still seeing the behavior, please file a new
> bug.
>
> ** Changed in: xserver-xorg-video-intel (Ubuntu)
>       Status: Triaged => Fix Released
>
> --
> [g45] Screen flicker/resync on X4500HD
> https://bugs.launchpad.net/bugs/275152
> You received this bug notification because you are a direct subscriber
> of a duplicate bug.
>
> Status in X.Org X server: Fix Released
> Status in “xserver-xorg-video-intel” source package in Ubuntu: Fix Released
>
> Bug description:
> Binary package hint: xserver-xorg-video-intel
>
> I have a Gigabyte GA-EG45M-DS2H (i.e. G45 graphics chip) and something about the Intel xorg driver is getting the chip very confused.
>
> The board is connected to a Sony bravia KDL-40V3000 TV via HDMI (but the same problem exists when using the DVI port and a  DVI->HDMI cable)
>
> I see very frequent dropouts of the signal. The screen blanks briefly and comes back, with the TV then displaying the name of the input (it happens to be AV4) and the resolution (1080p).
>
> Once this has happened, rebooting shows the problem persisting in the BIOS. This originally made me think the problem was in hardware.
>
> However, booting Windows XP with the appropriate Intel drivers there produces a rock solid picture that never produces this resync. It's only when Windows switches into its full graphical environment that it happens, which suggests that their driver is programming the chip in a more correct way.
>

[André (andred-ubuntu-deactivatedaccount-deactivatedaccount)]

I can confirm that this bug is fixed in Karmic, since the problem no longer occurs for me using xserver-xorg-video-intel 2:2.7.99.1+git20090602.

[mnk0 (samad-omar)]

Ok what are steps taken to fix this in 9.04

 BlackBerry® wireless email FTW

-----Original Message-----
From: André Dahlqvist <email address hidden>

Date: Sat, 06 Jun 2009 10:56:57
To: <email address hidden>
Subject: [Bug 275152] Re: [g45] Screen flicker/resync on X4500HD

I can confirm that this bug is fixed in Karmic, since the problem no
longer occurs for me using xserver-xorg-video-intel
2:2.7.99.1+git20090602.

--
[g45] Screen flicker/resync on X4500HD
https://bugs.launchpad.net/bugs/275152
You received this bug notification because you are a direct subscriber
of a duplicate bug.

Status in X.Org X server: Fix Released
Status in “xserver-xorg-video-intel” source package in Ubuntu: Fix Released

Bug description:
Binary package hint: xserver-xorg-video-intel

I have a Gigabyte GA-EG45M-DS2H (i.e. G45 graphics chip) and something about the Intel xorg driver is getting the chip very confused.

The board is connected to a Sony bravia KDL-40V3000 TV via HDMI (but the same problem exists when using the DVI port and a DVI->HDMI cable)

I see very frequent dropouts of the signal. The screen blanks briefly and comes back, with the TV then displaying the name of the input (it happens to be AV4) and the resolution (1080p).

Once this has happened, rebooting shows the problem persisting in the BIOS. This originally made me think the problem was in hardware.

However, booting Windows XP with the appropriate Intel drivers there produces a rock solid picture that never produces this resync. It's only when Windows switches into its full graphical environment that it happens, which suggests that their driver is programming the chip in a more correct way.

[Greg Priest-Dorman (priestdo)]

Has anyone found a fix for 9.04? I cannot upgrade for several months at the earliest and have a lab full of 9.04 boxs and new 22" monitors (an upgrade from 17"). They all exhibit this issue when the monitors are connected by DVI.

Is it a matter of building the newer Xorg driver from source? Can someone confirm this would take care of the issue?

All leads gratefully accepted.