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I got quick responses on the first of my two questions, still it
does not work, even gets worse:
Thanks to Peter.Stern_at_weizmann.ac.il and "Colin Walters" <walters_at_zk3.dec.com>
Colin sent an advice on how to tune the Graphics card. I tried
it, the card turned out to be ZLXp2-EV5, but it resulted in a
TrueColor Display nof 8 bit depth !
My second request is still open.
Tschüß,
Dieter
_____________________________*__________________________________
/ * dieter.meinert_at_aip.de \
\ Dieter Meinert (- **
http://www.aip.de/~dieter/ \
\__________________A______*__*___________________________________/
(public pgp key from
http://www.aip.de/~dieter/)
Original message:
Hi fellows,
First I have a curious question that bothers me since I started
managing Dec Alphas on DU/T64U:
I want to use a TrueColor(24bit) Display at 1280x1024 Pixels.
- - From simple arithmetics ((1280*1024*24)bit/8 = 7864320byte) I
need a graphics card with 8MB memory to achieve this, and all our
machines have at least 8MB graphics memory. Nevertheless only our
Alphas with sufficiently more memory (~32MB) can use truecolor,
while the others hardly can use 16bit color depth with 16 or 24MB
memory. This is not true on linux PC.
Can anyone explain this discrepancy to me ?
Second: I probably found a Bug in Java Support with T64Uv4.0f and
below, probably also above, in support of the PowerStorm4D50T
Graphics card:
Anytime I use Netscape, and the page I load down contains Java or
JavaScript data, at some point netscape (any version from 4.0 up
to current (4.7x) ) stops working and doesn't take any more
input. I am only able to kill it from remote.
Since this only happens on the one machine with the
Powerstorm4D50T, in any user environment, while we
have several other machines with the same hardware/software
configuration except the graphics, I'd like to ask if someone had
experienced similar problems, or probably knows a Fix for that.
TIA.
From: Peter.Stern_at_weizmann.ac.il
Reply-to: Peter.Stern_at_weizmann.ac.il
Content-Type: text/plain; charset=iso-8859-1
Dear Dieter:
First, there seems to be something wrong with your "simple arithmetic"
since I get half that number. More simply, 1280x1024 is 1.25MB * 3
= 3.75MB which is all you should need for TrueColor (unless of course
you are doing double buffering or some such thing). In any event,
*MB should be more than enough. You should check that the files:
/var/X11/Xserver.conf
and
/usr/dt/config/Xservers.con
don't contain something like:
args <
-pn -vclass0 PseudoColor
>
which specifies a different visual class than the TrueColor default.
Regards,
Peter
And on a disconfirming notice of mine (see quote inside Peters
message):
Dear Dieter:
So presumably the command xdpyinfo given on the console screen doesn't
list any visual with a depth of more than 16 planes? If not, are you
sure about the memory the grahics card has?
Regards,
Peter
> |=> args <
> |=> -pn -vclass0 PseudoColor
> |=> >
> |=>
>
> No, there aren't any options in /usr/dt/config/Xservers:
>
> :0 Local local_at_console /usr/bin/X11/X :0
>
> we tried with
>
> :0 Local local_at_console /usr/bin/X11/X :0 -screen 1280x1024 -vclass TrueColor
>
> but the best result was 16bit colors, usually the server refused
> to work.
>
> |=> which specifies a different visual class than the TrueColor default.
> |=>
> |=> Regards,
> |=> Peter
> |=>
>
> Tschüß,
> Dieter
From: "Colin Walters" <walters_at_zk3.dec.com> (following this
advice resulted in 8bit TrueColor for me, a horrible display !)
Dieter,
The following e-mail was provided to me by a colleague who is
documenting the procedure
Colin Walters
Compaq UNIX Business Segment - Tru64 UNIX Publications Group
System Administration Documentation
Nashua, NH USA Tel: 603-884-0440
http:\\www.zk3.dec.com\~walters (firewalled)
ONLINE DOCUMENTATION AT:
http://www.unix.digital.com/faqs/publications/pub_page/doc_list.html
See our new Best Practices
If you have color problems with Netscape and other applications on your
Tru64 UNIX system, and your system contains a Comet (ELSA GLORIA Synergy)
or TGA2 video card, the procedure in this message should resolve your
problems.
By default, our X server operates in 8-bit color mode (256 colors). The
following procedure configures the X server to operate in 24-bit color mode
(16777215 colors),
Log in as root and perform these steps:
1) Enter the following command to determine the type of video card in your
system:
# sizer -gt
If the response is COMET, ZLXp2-EV5, or ZLXp2-EV4, you have a video card
that is capable of 24-bit color; continue with step 2. Otherwise, you have
an incompatible card and this won't help you. Sorry. (Future cards might
support 24-bit color, but for now, Comet and TGA2 are the only ones.)
2) Save your work and close all open documents. (If you're reading this
procedure on your Tru64 UNIX system, you should print it out before
continuing.) You will need to exit your session in one of the following
steps.
3) Edit the /usr/var/X11/Xserver.conf file and look for a statement similar
to the following:
args <
-pn
>
It might contain a line or two about cateyes/powerstorm, too. This is ok.
4) Insert the following line after the "-pn" and before the ">":
- -vclass TrueColor -depth 24
It should look like this:
args <
-pn
-vclass TrueColor -depth 24
>
It should work like this, too, but I haven't tested it:
args <
-pn -vclass TrueColor -depth 24
>
These options tell the X server to use 24-bit color. Verify that you have
typed them correctly (note the "e" in TrueColor, not like Tru64) and save
the Xserver.conf file.
5) Execute the following command to stop the X server:
# /sbin/init.d/xlogin stop
Your screen should turn blue. (It's a feature, not a bug!)
6) Hit Enter to bring up the login prompt and log in as root.
7) Execute the following command to restart the X server:
# /sbin/init.d/xlogin start
Your system should come up to the full CDE login screen. You will see the
single-user login prompt on the way up, but be patient. CDE is coming.
If you see an error message indicating that the X server could not be
restarted, it might indicate a typo in the Xserver.conf file. Log in at
the single-user level and check the contents of the file. If they are
valid, it's possible that your system does not support 24-bit color. In
that case, to recover, edit the Xserver.conf file, remove the options that
you added, and start the X server again.
On the other hand, if it works, you should see a difference in your desktop
when CDE starts up. There should be more colors, and images should be
sharper. You can test this by opening a web page with JPG or GIF files in
Netscape.
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Received on Tue Nov 14 2000 - 15:34:36 NZDT