Date: Sat, 14 Dec 2002 21:28:35 -0600 From: Jon Noack <noackjr@rice.edu> To: freebsd-current@freebsd.org Subject: CPUTYPE=p4 warning needed Message-ID: <3DFBF6E3.3050306@rice.edu>
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I didn't see any warnings in /usr/share/examples/etc/make.conf, so I
thought I'd share my experience with CPUTYPE=p4.
Building world with CPUTYPE=p4 results in static when playing back mpeg
audio. All other audio works fine. A few cases where this is present
(to show it is not application specific):
1) playing an mp3 with mpg123
2) playing an mp3 with xmms
3) playing a movie with mpeg audio in mplayer
A symptom of this problem in xmms is that the spectrum analyzer is
almost constantly maxed out at most every frequency. Thus, it seems
that in the decoding of the audio stream the amplitude of the signal is
outputed too high, resulting in some form of clipping. This clipping
sounds like static. This is ignorant speculation, but maybe it will help.
This problem is present when these applications are installed via
packages or compiled from ports.
In any case, I think it would be a good idea to include a warning in
/usr/share/examples/etc/make.conf that says CPUTYPE optimizations may
result in broken code. Maybe it's just my machine, but I've recompiled
several times now and it's consistent (if and only if I build and
install world with CPUTYPE=p4 is the problem evident).
Jon Noack
dmesg:
Copyright (c) 1992-2002 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 5.0-CURRENT #0: Sat Dec 14 20:48:25 CST 2002
noackjr@compgeek.dnsalias.org:/usr/obj/usr/src/sys/COMPGEEK
Preloaded elf kernel "/boot/kernel/kernel" at 0xc04ff000.
Preloaded elf module "/boot/kernel/acpi.ko" at 0xc04ff0a8.
Timecounter "i8254" frequency 1193182 Hz
Timecounter "TSC" frequency 2539102024 Hz
CPU: Pentium 4 (2539.10-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf24 Stepping = 4
Features=0x3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM>
real memory = 536805376 (511 MB)
avail memory = 516071424 (492 MB)
Initializing GEOMetry subsystem
Pentium Pro MTRR support enabled
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <AMIINT AMIINI09> on motherboard
ACPI-0625: *** Info: GPE Block0 defined as GPE0 to GPE31
Using $PIR table, 15 entries at 0xc00f7450
acpi0: power button is handled as a fixed feature programming model.
Timecounter "ACPI-fast" frequency 3579545 Hz
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x408-0x40b on acpi0
acpi_cpu0: <CPU> on acpi0
acpi_cpu1: <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: <Intel 82850 host to AGP bridge> mem 0xe8000000-0xebffffff at
device 0.0 on pci0
pcib1: <PCIBIOS PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
uhci0: <Intel 82801DB (ICH4) USB controller USB-A> port 0xdc00-0xdc1f
irq 10 at device 29.0 on pci0
usb0: <Intel 82801DB (ICH4) USB controller USB-A> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
ums0: Microsoft Microsoft Wheel Mouse Optical\M-., rev 1.10/1.21, addr
2, iclass 3/1
ums0: 3 buttons and Z dir.
uhub1: Philips Semiconductors hub, class 9/0, rev 1.10/1.10, addr 3
uhub1: 3 ports with 3 removable, self powered
uhci1: <Intel 82801DB (ICH4) USB controller USB-B> port 0xd800-0xd81f
irq 9 at device 29.1 on pci0
usb1: <Intel 82801DB (ICH4) USB controller USB-B> on uhci1
usb1: USB revision 1.0
uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
uhci2: <Intel 82801DB (ICH4) USB controller USB-C> port 0xd400-0xd41f
irq 9 at device 29.2 on pci0
usb2: <Intel 82801DB (ICH4) USB controller USB-C> on uhci2
usb2: USB revision 1.0
uhub3: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
pci0: <serial bus, USB> at device 29.7 (no driver attached)
pcib2: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci2: <ACPI PCI bus> on pcib2
pcib3: <PCI-PCI bridge> at device 2.0 on pci2
pci3: <PCI bus> on pcib3
asr0: <Adaptec Caching SCSI RAID> mem 0xe2000000-0xe3ffffff irq 11 at
device 2.1 on pci2
asr0: major=154
asr0: ADAPTEC 2100S FW Rev. 370F, 1 channel, 256 CCBs, Protocol I2O
rl0: <RealTek 8139 10/100BaseTX> port 0xbc00-0xbcff mem
0xefeeff00-0xefeeffff irq 12 at device 9.0 on pci2
rl0: Realtek 8139B detected. Warning, this may be unstable in autoselect
mode
rl0: Ethernet address: 00:20:ed:40:16:0c
miibus0: <MII bus> on rl0
rlphy0: <RealTek internal media interface> on miibus0
rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
pcm0: <Creative CT5880-E> port 0xb800-0xb83f irq 11 at device 10.0 on pci2
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel ICH4 ATA100 controller> port
0xff00-0xff0f,0-0x3,0-0x7,0-0x3,0-0x7 at device 31.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
acpi_button1: <Sleep Button> on acpi0
fdc0: cmd 3 failed at out byte 1 of 3
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
fdc0: cmd 3 failed at out byte 1 of 3
orm0: <Option ROMs> at iomem 0xcc000-0xd1fff,0xc0000-0xcbfff on isa0
pmtimer0 on isa0
fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> at port
0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounters tick every 10.000 msec
acpi_cpu: CPU throttling enabled, 8 steps from 100% to 12.5%
ata0-slave: timeout waiting for interrupt
ata0-slave: ATAPI identify failed
acd0: CD-RW <CD-W516EB> at ata0-master UDMA33
acd1: DVD-ROM <JLMS DVD-ROM LTD163D> at ata1-master UDMA33
da0 at asr0 bus 0 target 0 lun 0
da0: <ADAPTEC RAID-0 370F> Fixed Direct Access SCSI-2 device
da0: Tagged Queueing Enabled
da0: 35003MB (71686144 512 byte sectors: 255H 63S/T 4462C)
MBREXT Slice 5 on da0s3:
0000 00 01 c1 ff 0c fe ff ff 3f 00 00 00 87 f1 45 02 |........?.....E.|
[0] f:00 typ:12 s(CHS):255/1/193 e(CHS):255/254/255 s:63 l:38138247
0000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
[1] f:00 typ:0 s(CHS):0/0/0 e(CHS):0/0/0 s:0 l:0
Mounting root from ufs:/dev/da0s2a
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