Gentoo Archives: gentoo-user

From: Drew Tomlinson <drew@××××××××××××××.net>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Re: Laptop ATI Integrated Video Performance?
Date: Sat, 29 Dec 2007 16:49:02
Message-Id: 477677B3.2040304@mykitchentable.net
In Reply to: [gentoo-user] Re: Laptop ATI Integrated Video Performance? by Grant Edwards
1 On 12/25/2007 10:19 AM Grant Edwards said the following:
2 > On 2007-12-25, Drew Tomlinson <drew@××××××××××××××.net> wrote:
3 >
4 >
5 >> I have a Gateway laptop with an integrated ATI graphics board. lspci
6 >> detects it as:
7 >>
8 >> 01:05.0 VGA compatible controller: ATI Technologies Inc RS485 [Radeon
9 >> Xpress 1100 IGP]
10 >>
11 >> However when attempting to view a DVD at full screen, the display is a
12 >> bit "jumpy" as if the video hardware is not fast enough.
13 >>
14 >
15 > It's pretty hard to believe that the video hardware is the
16 > problem. I've played back DVDs on laptop ATI chipsets a decade
17 > older than yours and it worked fine. I've currently got a two
18 > year old ATI laptop chipset (X300?), and it has no trouble
19 > playing DVDs using either the Radeon or the fglrx drive.
20 >
21 > My guess is the optical drive doesn't have DMA enabled.
22 >
23 DMA is enabled. If it were not, I would also expect to see the
24 choppiness no matter what the video size.
25
26 tagalong conf.d # hdparm /dev/hdb
27
28 /dev/hdb:
29 IO_support = 0 (default 16-bit)
30 unmaskirq = 0 (off)
31 using_dma = 1 (on)
32 keepsettings = 0 (off)
33 readonly = 0 (off)
34 readahead = 256 (on)
35
36 > You may want to check to make sure the XV video overlay support
37 > is enabled, but even without it, playing back SD video purely
38 > in software shouldn't be a problem on anything with a CPU
39 > faster than 500MHz.
40 >
41
42 How can I verify XV video overlay support? I'm sure my CPU is capable
43 as its an AMD Turion dual core running at 1.6ghz.
44
45 Thanks,
46
47 Drew
48
49
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