Hi,
I'm having trouble with mplayer that seems to be highlighting a bug or general
inefficiency in the ata driver when used with the VIA VT8235 chipset used in
the ASUS A7V8X motherboard.
The problem is that whenever a video is being played and there is any
reasonable amount of disk activity (e.g dd if=/dev/urandom of=test), the video
skips and the mplayer status shows that it's had to drop frames to keep the
video and audio in sync.
I have tested using the same video under NetBSD 3.0 and Linux 2.6.{16|17} and
neither of them exhibit this problem. This also rules out the possibility of it
being faulty hardware.
To be on the safe side I have tried 2 different chipsets of both graphics card
and sound card and neither makes any difference.
I noticed that under Linux hdparm shows it to be using udma4 by default and
udma5 is not even listed as being supported.
Linux:
# hdparm -I /dev/hda
/dev/hdc:
ATAPI CD-ROM, with removable media
Model Number: PIONEER DVD-RW DVR-108
Serial Number: DJDL021894WL
Firmware Revision: 1.20
Standards:
Likely used CD-ROM ATAPI-1
Configuration:
DRQ response: 50us.
Packet size: 12 bytes
Capabilities:
LBA, IORDY(can be disabled)
Buffer size: 64.0kB
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 *udma4
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=240ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
*DEVICE RESET cmd
*PACKET command feature set
*Power Management feature set
HW reset results:
CBLID- above Vih
Device num = 0 determined by CSEL
FreeBSD:
# atacontrol list
ATA channel 0:
Master: ad0 IC35L060AVVA07-0/VA3OA52A ATA/ATAPI revision 5
Slave: no device present
ATA channel 1:
Master: acd0 PIONEER DVD-RW DVR-108/1.20 ATA/ATAPI revision 5
Slave: no device present
# atacontrol mode ad0
current mode = UDMA100
I tried changing the mode to udma4 and also to pio but unfortunately it made no
difference.
If anybody could offer up some advice or point me in the direction of avenues to
explore I would appreciate it as I've run out of ideas.
Thanks for your time.
Copyright (c) 1992-2006 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 6.1-RELEASE #0: Sun May 7 04:32:43 UTC 2006
[EMAIL PROTECTED]:/usr/obj/usr/src/sys/GENERIC
ACPI APIC Table: ASUS A7V8X
Timecounter i8254 frequency 1193182 Hz quality 0
CPU: AMD Athlon(TM) XP 2000+ (1658.54-MHz 686-class CPU)
Origin = AuthenticAMD Id = 0x662 Stepping = 2
Features=0x383fbffFPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
AMD Features=0xc0400800SYSCALL,MMX+,3DNow+,3DNow
real memory = 1073725440 (1023 MB)
avail memory = 1041784832 (993 MB)
ioapic0: Changing APIC ID to 2
ioapic0 Version 0.3 irqs 0-23 on motherboard
kbd1 at kbdmux0
acpi0: ASUS A7V8X on motherboard
acpi0: Power Button (fixed)
Timecounter ACPI-fast frequency 3579545 Hz quality 1000
acpi_timer0: 32-bit timer at 3.579545MHz port 0xe408-0xe40b on acpi0
cpu0: ACPI CPU on acpi0
acpi_button0: Power Button on acpi0
pcib0: ACPI Host-PCI bridge port 0xcf8-0xcff on acpi0
pci0: ACPI PCI bus on pcib0
agp0: VIA 8377 (Apollo KT400/KT400A/KT600) host to PCI bridge mem
0xf000-0xf7ff at device 0.0 on pci0
pcib1: ACPI PCI-PCI bridge at device 1.0 on pci0
pci1: ACPI PCI bus on pcib1
pci1: display, VGA at device 0.0 (no driver attached)
pci1: display at device 0.1 (no driver attached)
bfe0: Broadcom BCM4401 Fast Ethernet mem 0xd600-0xd6001fff irq 18 at
device 9.0 on pci0
miibus0: MII bus on bfe0
bmtphy0: BCM4401 10/100baseTX PHY on miibus0
bmtphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
bfe0: Ethernet address: 00:e0:18:a1:31:f0
ral0: Ralink Technology RT2500 mem 0xd580-0xd5801fff irq 17 at device
14.0 on pci0
ral0: MAC/BBP RT2560 (rev 0x04), RF RT2525
ral0: Ethernet address: 00:0e:2e:5c:2d:0f
uhci0: VIA 83C572 USB controller port 0xb800-0xb81f at device 16.0 on pci0
uhci0: [GIANT-LOCKED]
usb0: VIA 83C572 USB controller on uhci0
usb0: USB revision 1.0
uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1: VIA 83C572 USB controller port 0xb400-0xb41f at device 16.1 on pci0
uhci1: [GIANT-LOCKED]
usb1: VIA 83C572 USB controller on uhci1
usb1: USB revision 1.0
uhub1: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2: VIA 83C572 USB controller port 0xb000-0xb01f at device 16.2 on pci0
uhci2: [GIANT-LOCKED]
usb2: VIA 83C572 USB controller on uhci2
usb2: USB revision 1.0
uhub2: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
ehci0: VIA VT6202 USB 2.0
