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Re: Dell Latitude PP01L: ATI Radeon Mobility M7 LW and AC'97 Modem



On Sat, May 22, 2004 at 07:18:35AM -0400, Adam Kessel wrote:
> I've just installed sid on a Dell Latitude PP01L. I have a few questions:
> 
> * 3d Acceleration.  As far as I can tell, Radeon Mobility 7500 is
>   supposed to be supported in X 4.3 including 3d accel and xvideo. I
>   can't get 3d accel to work. I have radeon loaded as a module, using the
>   2.6.6 kernel.  I'm using the "radeon" X driver, with the option
>   "UseFBDev".  I've also tried "agpmode" "2" and "4".  Regardless, I see
>   the following in XFree86.0.log
> 
> (II) RADEON(0): Direct rendering disabled
> 
>   Also, lsmod reports that radeon module is unused.

I remember, when XFree86 4.3.x finally appeared in sid, I had similar
troubles. Tracked it down (at bugs.debian.org) to a version
incompatibility with the GL libraries. I don't remember the details
anymore, try to have look at bugs.debian.org

> * Does anyone know if this machine is known by a different name?
>   linux-laptop.net doesn't list the model, although other sites claim
>   various Latitude models are actually PP01L.  The specs are Pentium 4M
>   2Gz, ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500],
>   3Com Corporation 3c905C-TX/TX-M [Tornado], Intel Corp.  82801CA/CAM
>   AC'97 Modem Controller.  Came with 256M RAM and 20G HD, I've upgraded
>   to 384M and 80G.  I would love to find someone with this exact system
>   who has already dealt with configuration issues.

Sounds much like my ( company provided) Latitude C640.
I would not have bought it myself.
The performance simply sucks, a kernel compile on a Duron/900 box with
512 MiB RAM was noticeably faster than on the notebook (P4M/1.8GHz, 1024
MiB RAM)

Also, the display chip has some personality problems. SOmetimes, while
changing video modes (start X, switch from X to terminal or back, resume
after suspend), it decides to corrupt the display memory and all I
can see is a chaos made of little coloured lines. The machine continues
to run, I can see the mouse cursor (or text in terminal) changing.
Pressing Fn-D does not help, it always comes back to the same garbled
screen. Neither helps a suspend-to-ram and wake-up. In the worse case,
the complete system freezes and the corners of the display start to
slowly get whiter.

To be fair, it does not happen when I use a VESA driver or in MS
Windows. So it sounds more like a problem with the driver. Still, the
net result is that it does not work as I would like it to.

The DVD drive is no good as well, playing a dvd takes almost 100% CPU
(both in Linux and Windows) and the output resembles a slide show.
(Yes, I made sure that DMA is switched on for ther drive).

As to power management, APM works better for me, the Fn-* shortcuts
works. The did not work with APCI enabled in kernel, even though got
more detailed info about the machine, like CPU temperature. I have not
investigated it much. With the laptop-mode patch (included in 2.6.6), I
get cca. 2:30h from the battery.

I have no use for the modem, so I have not even tried to get it working.

[e]

-- 
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>next@hysteria.cz<                           >.ACMD eht setaloiv siht gnidaeR<

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