[g45] Horizontal lines on Intel G45 (aka x4500hd) output

[Nathan MWF]

I have, for a few more hours, a board with on of the latest Intel chip sets (G45 and ICH10). It is running on a SUPERMICRO MBD-C2SEA with 2GB of DDR3 and a Core2Quad (Q9300). On 8.04 the video will only run at 800x600, as it does not include support for the new graphics.

On 8.10 Alpha 4 (updated today), the graphics work but have a couple of odd behaviors. First, and most often, multi-colored lines appear on the screen. There is always one line about 1/3 of the way down from the top of the screen at login. These lines also appear when you scroll (like gnome "Add to Panel"). They are mostly black, with scattered colored pixels.

Another minor annoyance is that the wait mouse cursor also jumps around by a few pixels, from top-left to bottom-right repeatedly as the desktop appears after login. I do not know if these two anomalies are related.

Both happen at all resolutions, on both monitors I have tried.

Thanks to all. I hope this report helps 8.10 be better.

[Anton Blanchard (anton-samba)]

I'm seeing both issues on an Intel DG45ID board.

I worked around the cursor jumping issue by disabling hardware cursor in the xorg.conf:

Section "Device"
...
        Option "SWCursor" "yes"

But still see the horizontal line corruption.

[Timo Aaltonen (tjaalton)]

Do you have the same issue with the latest updates from intrepid, including the new kernel?

[Chris Jones (cmsj)]

I have seen this on G45 too, I get a line or two of coloured pixels. Running latest Intrepid on a Gigabyte EG45M-DS2H

[fukai (iakuf)]

I have G45 too,but i display abnormal

[Dave Gilbert (ubuntu-treblig)]

I'm seeing something similar on a 945GM; I think they are the top edge of windows - I've seen some of the lines seem to have the same colouring as a line of a title bar.
It only seems to happen for me if I enable both the external display and the internal LCD at the same time.
(Toshiba Equium A200 with 1280x800 internal; external is a Dell S2409W running 1920x1080). There are a few EE lines in the Xorg.0.log:

(EE) intel(0): Cannot support DRI with frame buffer width > 2048.
(EE) intel(0): Non-contiguous GTT entries: (6295552,0x16bffbe000) vs (131072,0xbf820000)
(EE) intel(0): underrun on pipe B!
(EE) intel(0): underrun on pipe B!
(EE) USBPS2: Read error: No such device
(EE) USBPS2: Read error: No such device

I don't know if they are related.

Dave

[Dave Gilbert (ubuntu-treblig)]

oops - should have said; that's on intrepid upto date as of today.

[Martin Olsson (mnemo)]

I got the Gigabyte GA-EG45M-DS2H motherboard which has the G45+ICH10R. I cannot boot Intrepid with EXA at all, X.org freezes after ~1 sec. I have also tried git head and 2.5.96 still exhibits this bug for me. jbarnes blogged yesterday that he and Zhenyu was going to work on G4x stability next week:
http://virtuousgeek.org/blog/index.php/jbarnes/2008/10/03/title_1

btw, if I switch to XAA xorg starts and is usable but no compiz :-(

[Ste (ilpillo)]

I can confirm that the horizontal artifact lines are also present with chipset Intel G43, on Intrepid beta, AMD64

[Ste (ilpillo)]

goood news, I have installed the new intel driver from here:
https://launchpad.net/~thjaeger/+archive
and the problem seems fixed (I have tested the system for just three or four hours)

[Dave Gilbert (ubuntu-treblig)]

This isn't happening for me on release Intrepid with the two monitors stacked vertically - does it happen for anyone else on the release Intrepid?

[Rainer G (rainer-logosapiens)]

I saw the problem on Intrepid Alpha 3 with my Intel DG45ID motherboard. It appears to be fixed in the Intrepid release version.

Thanks.
Rainer.

[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

[Bryce Harrington (bryce)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.