From: tholen@antispam.ham
Dave Yeo writes:
>> 2. Playing WebM videos at youtube hasn't been a very good experience for
>> me. I already mentioned how plugging in a USB memory key caused a
>> video that was playing smoothly to suddenly start hiccuping. Well,
>> another "video" with a static picture started stuttering after I used
>> the volume control on my machine. Another video started stuttering
>> after I launched a GUI app. About the only thing I could do that
>> didn't affect playback was typing text in an already-open command
>> window. In one case, I let the stuttering video continue playing to
>> see if it would ever recover on its own when I stopped using the
>> machine for other things, and it wound up crashing the whole machine
>> with a Trap D in the OS/2 kernel. I'm guessing the crash was related
>> to something like DIVE and not Firefox specifically, but the stuttering
>> is a fairly common problem. In one case, I was not using the machine
>> for anything else when stuttering started occurring. With a 2.5 GHz
>> processor and 2 GB of memory, I expect that I have enough horsepower
>> with this machine to avoid stuttering youtube videos. SNAP and a
>> Matrox G450.
>
> Try downloading and running
> http://hobbes.nmsu.edu/download/pub/os2/util/misc/pci104vka.zip (there
> is also an updated database for this but the file name slips my memory)
> and pay close attention to which IRQ your sound card and video card are
> using and whether anything else is also using the same IRQ.
> I personally currently have a conflict between my sound card and SATA
> card which causes quite a few apps that are dependent on MMOS2 to not
> run or in the case of SeaMonkey, attempting to run a webm video just
> doesn't work. (freezes without playing)
Here's what the Hardware Manager reports:
============================================================
1 EXCLUSIVE Keyboard Controller
2 EXCLUSIVE PIC_1 (PIC_0 has no IRQ associated with it)
3 SERIAL_1 Serial Controller
4 SERIAL_0 Serial Controller
5 EHCI USB Host Controller
6 Floppy Controller
8 EXCLUSIVE RTC
9 EXCLUSIVE SoundMax Integrated Digital Audio
10 OHCI USB Host Controller
10 UHCI USB Host Controller
11 Adaptec 29160
11 OHCI USB Host Controller
12 EXCLUSIVE PS/2 Auxiliary Device Controller
15 Adaptec 29160
============================================================
And here's an excerpt of what the PCI utility reports:
============================================================
Device 00E0h uPD720100A USB 2.0 EHCI Controller (Version 2.0)
System IRQ 5, INT# C
Device 2445h 82801BA/BAM AC'97 Audio Controller (ICH2/ICH2-M B4 step)
System IRQ 9, INT# B
Device 2443h 82801BA/BAM SMBus Controller (ICH2/ICH2-M B4 step)
System IRQ 9, INT# B
Device 2442h 82801BA/BAM USB Controller #1 (ICH2/ICH2-M B4 step)
System IRQ 10, INT# D
Device 0035h uPD720100A USB OpenHCI Controller (Version 1.0)
System IRQ 10, INT# A
Device 0525h MGA-G400/450 Chipset
System IRQ 11, INT# A
Device 0035h uPD720100A USB OpenHCI Controller (Version 1.0)
System IRQ 11, INT# B
Device 2449h 82801BA LAN Controller (ICH2 B2-B5, ICH2X B0/C0 steps)
System IRQ 11, INT# A
Device 0080h 29160/N/LP Ultra160 (AIC-7892A) SCSI Host Adapter
System IRQ 11, INT# A
Device 0080h 29160/N/LP Ultra160 (AIC-7892A) SCSI Host Adapter
System IRQ 15, INT# A
ROM PCI IRQ routing table Tests....
ROM IRQ routing table found at F000h:2B20h
Table Version 1.0 - OK
Table size 240 bytes - OK
Table Checksum 84h - OK
PCI Interrupt Router: 82801BA LPC Interface (ICH2 B4 step)
IRQ's dedicated to PCI : None
Error: connectivity mismatches for link value 63:
Bus=0 Device=31 Pin=INTA# Map=3,4,5,6,7,9,10,11,12,14,15
Bus=2 Device= 1 Pin=INTA# Map=9,10,11
The ROM PCI IRQ routing table appears to be faulty!!
IRQ Summary: IRQs 5,9,10,11,15 are used by PCI devices
Shared IRQs: IRQ 9 is shared by 2 PCI Devices
IRQ 10 is shared by 2 PCI Devices
IRQ 11 is shared by 4 PCI Devices
============================================================
So although IRQ 9 is shared by two devices, they're both
associated with audio (SMBus presumably refers to the
SoundMax Bus, as indicated by the Hardware Manager).
Interesting that the Hardware Manager says that SoundMax
has exclusive use of the IRQ while the PCI program says
it's shared. Anyway, playing just audio hasn't been a
problem.
And IRQ 10 is shared by two devices, both associated with
legacy USB support (the UHCI controller and one of the
two OHCI controllers).
It's IRQ 11 that is associated with my Matrox card, the
other OHCI USB controller, one of the SCSI cards, and my
network adapter. Meanwhile, IRQ 13 appears to be unused
(Hardware Manager didn't show anything associated with
7 or 14 either).
Unsure of what the message about the faulty routing table
means.
I've never manipulated the system at such a low level. Is
it possible to configure it so that the video uses IRQ 13?
--- Internet Rex 2.31
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