xorg.conf is not configured correctly for a Compaq Presario 1800T laptop

Bug #16842 reported by rebroad on 2005-05-09
12
This bug affects 1 person
Affects Status Importance Assigned to Milestone
xorg (Ubuntu)
Medium
Unassigned

Bug Description

As configured by xserver-xorg the display was garbled, with parts of the screen being mirrored and moving
fuzzy bits between them - it didn't look like the gfx card was very happy doing what it was being asked to do!

I have attached the xorg.conf file as produced by the config, and also an xorg.conf file that works (modified
from an XF86Config file that I downloaded from the Internet).

Please let me know of any further testing I can do to help, such as trying line by line to get the file the
same as the ubuntu configured one, until I isolate the line(s) that cause the problem. (I don't want to do
this unless someone says it will help!)

rebroad (rebroad) wrote :

Created an attachment (id=2242)
as created by ubuntu default install

rebroad (rebroad) wrote :

Created an attachment (id=2243)
Configuration that works ok

(although Direct Render is not enabled with this.. not sure if it is safe to
re-enable, haven't tried yet).

rebroad (rebroad) wrote :

Created an attachment (id=2244)
Configuration that works 2nd version

I've re-arranged the xorg.conf that works so that it looks similar to the
ubuntu configured version, but functionaly remains the same. Should making
running a diff between them much easier now.

rebroad (rebroad) wrote :

Created an attachment (id=2245)
Configuration that works 3rd version

Daniel Stone (daniels) wrote :

Could you please run this:
DEBUG_XORG_PACKAGE=developer DEBUG_XORG_DEBCONF=developer sudo dpkg-reconfigure
-phigh xserver-xorg
(it will produce a lot of output)
and send me the result?

rebroad (rebroad) wrote :

Daniel, unfortunately, the laptop I was using no longer has linux on now, so I will not be able to
perform any further testing on it. Sorry.

Daniel Stone (daniels) wrote :

closing old NEEDINFO

Robert (robrwo) wrote :

I confirm this issue.

I have the same problem with a Compaq Presario 1800T on Hardy. (I've had the same problem with this laptop since Feisty; it worked fine with Dapper and Edgy.)

FYI, I've also had the same problem trying Debian Etch on this laptop, so the issue is probably upstream.

The problem is that there is a thin vertical artifact a few pixels wide at 800x600. On 640x480 the artifact is significantly wider.

Changed in xorg:
status: Invalid → Confirmed
Robert (robrwo) wrote :

I also confirm that using the third version of the xorg.conf file posted here (http://launchpadlibrarian.net/1509936/xorg.conf) seems to fix the problem.

Bryce Harrington (bryce) wrote :

Robert, please attach your /var/log/Xorg.0.log

Changed in xorg:
assignee: daniels → nobody
status: Confirmed → Incomplete
Robert (robrwo) wrote :
Bryce Harrington (bryce) wrote :

Sounds like this is the magic bit:

    SubSection "extmod"
      Option "omit xorg-dga" # don't initialise the DGA extension
    EndSubSection

Could you please test this clean xorg.conf, which is a current stock xorg.conf just with the above bit added? If it makes it work, then we can forward this upstream for more advice. (Maybe it needs a quirk)

I no longer have that machine.

On Fri, Sep 19, 2008 at 9:49 PM, Bryce Harrington
<email address hidden> wrote:
> Sounds like this is the magic bit:
>
> SubSection "extmod"
> Option "omit xorg-dga" # don't initialise the DGA extension
> EndSubSection
>
> Could you please test this clean xorg.conf, which is a current stock
> xorg.conf just with the above bit added? If it makes it work, then we
> can forward this upstream for more advice. (Maybe it needs a quirk)
>
>
> ** Attachment added: "xorg.conf"
> http://launchpadlibrarian.net/17768969/xorg.conf
>
> --
> xorg.conf is not configured correctly for a Compaq Presario 1800T laptop
> https://bugs.launchpad.net/bugs/16842
> You received this bug notification because you are a direct subscriber
> of the bug.
>

Timo Aaltonen (tjaalton) wrote :

ok, closing since the issue cannot be debugged further.

Changed in xorg:
status: Incomplete → Invalid
bkibbey (bkibbey) wrote :

hey, can you re-open? I have an 1800t, and will stay with you until you can close this out. I'm having this same issue, am a Linux/Ubuntu newbie (sorry) but hopefully I won't be too painful...

Here's what I've observed/done...

1st - when i boot, everything looks fine until the login prompt screen comes up... the screen paints but there is a vertical blur in the middle and the screen on each side of that line is similar (like the screen is being split and overwritten half way, weird).

2nd - NEW FACT FOR YOU - when I press Fn-F3 (this laptops key combo to switch to an external monitor) TWICE (switch to and back), the screen comes back fine without the blur... weird. I figured this out on a fluke but it works as a temporary workaround for those trying to get through the install.

3rd - I overwrote my xorg.conf file with this one http://launchpadlibrarian.net/1509936/xorg.conf and restarted. result - still get the blur on the login screen, do my fn-f3 combo twice, login, and now i have 1024x768 resolution (instead of 800x600).

So that file helped for sure, but i'm still getting the weirdness until I switch the internal display on/off.

Any thoughts?

Ralph Finch (buggsy2) wrote :

I just did a fresh install of xubuntu 8.10 on a clean disk Compaq Presario 1800 with 196MB RAM. Same problem as described above. Screen displays OK with "Safe Graphics" install mode but I'd like to know if it's possible to increase the resolution.

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