On Wed, 6 Feb 2002, Daniel Nofftz wrote:
> i am working on an patch which performs power saving on athlon cpu's with
> the acpi function of the kernel ... at the moment only via's kt 133/133a
> and kt266/266a chipsets are supported, but other will follow soon (amd
> 760) ...
> if you want, you could try my patch.
> you can get it under:
> http://cip.uni-trier.de/nofftz/linux/amd_cool.diff
>
> it is a patch against the 2.4.17 kernel .
>
> you have to enable acpi-processor idle states in the kernel and you have
> to activate the patch at the kernel boot prompt with "amd_disconnect=yes".
> this is cause there are several problems known with the power saving
> function of the athlon/duron cpus ... i am working on this ....
>
> there is also a newer testing version which reads a special register on
> the cpu and shows the value at booting time ... if you have problems with
> the patch, or ... better ... if you have no problems with the patch, it
> would be verry nice if you could mail me the value it shows at boot :)
>
> the newer version is:
> http://cip.uni-trier.de/nofftz/linux/amd_cool_new.diff
>
> there is no big difference between the to versions ... the new version
> only reads the register (and ... if you say force_amd_clk=yes at the boot
> prompt it modifys the register, but at the moment it is not clear whether
> this function does write the right value ... so use this with care ... )
I just flashed my BIOS today (upgrading my Asus A7V133-C from BIOS
rev. 1005A to rev. 1007). Suddenly I begin to experience the sound-skips
reported by other people. The CPU is a TB (9x133, 1200MHz, family 6,
model 4, stepping 2).
Before flashing I had no trouble at all and the CPU cooled just fine, so
it might not only be a chipset issue.
I tried the new version of the patch and get:
CPU: Before vendor init, caps: 0183f9ff c1c7f9ff 00000000, vendor = 2
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 256K (64 bytes/line)
CPU: After vendor init, caps: 0183f9ff c1c7f9ff 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: After generic, caps: 0183f9ff c1c7f9ff 00000000 00000000
CPU: Common caps: 0183f9ff c1c7f9ff 00000000 00000000
CPU: AMD Athlon(tm) Processor stepping 02
Enabling fast FPU save and restore... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xf1180, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
Unknown bridge resource 0: assuming transparent
PCI: Using IRQ router VIA [1106/0686] at 00:04.0
Applying VIA southbridge workaround.
Athlon/Duron CLK_Ctrl Value found : fff0d22f
Athlon/Duron CLK_Ctrl Value set to : fff0d22f
Enabling disconnect in VIA northbridge: KT133/KX133 chipset found
I have no idea, what those register values were before flashing. When
using the patch from www.vcool.de I experience the same problem - it was
not present before either. I also experience the problem when running
the user-land tool from www.vcool.de. It does not matter whether I
specify force_amd_clk=yes or not.
No hardware changes nor kernel config changes were made.
I send output of lspci along if it might help.
Regards
Rasmus
-- -- [ Rasmus "Møffe" Bøg Hansen ] --------------------------------------- [...] Note that 120 sec is defined in the protocol as the maximum possible RTT. I guess we'll have to use something other than TCP to talk to the University of Mars. ----------------------------------[ moffe at amagerkollegiet dot dk ] --00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 03) Subsystem: Asustek Computer, Inc.: Unknown device 8042 Flags: bus master, medium devsel, latency 8 Memory at e4000000 (32-bit, prefetchable) [size=64M] Capabilities: [a0] AGP version 2.0 Capabilities: [c0] Power Management version 2
00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP] (prog-if 00 [Normal decode]) Flags: bus master, 66Mhz, medium devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 Memory behind bridge: d6000000-d7cfffff Prefetchable memory behind bridge: d7f00000-e3ffffff Capabilities: [80] Power Management version 2
00:04.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 40) Subsystem: Asustek Computer, Inc.: Unknown device 8042 Flags: bus master, stepping, medium devsel, latency 0 Capabilities: [c0] Power Management version 2
00:04.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP]) Flags: bus master, medium devsel, latency 32 I/O ports at d800 [size=16] Capabilities: [c0] Power Management version 2
00:04.3 USB Controller: VIA Technologies, Inc. UHCI USB (rev 16) (prog-if 00 [UHCI]) Subsystem: Unknown device 0925:1234 Flags: bus master, medium devsel, latency 32, IRQ 9 I/O ports at d000 [size=32] Capabilities: [80] Power Management version 2
00:04.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40) Subsystem: Asustek Computer, Inc.: Unknown device 8042 Flags: medium devsel, IRQ 9 Capabilities: [68] Power Management version 2
00:0a.0 Multimedia audio controller: Ensoniq ES1370 [AudioPCI] (rev 01) Subsystem: Unknown device 4942:4c4c Flags: bus master, slow devsel, latency 32, IRQ 5 I/O ports at a400 [size=64]
00:0b.0 Ethernet controller: Intel Corporation 82557 [Ethernet Pro 100] (rev 08) Subsystem: Intel Corporation EtherExpress PRO/100+ Management Adapter Flags: bus master, medium devsel, latency 32, IRQ 10 Memory at d5800000 (32-bit, non-prefetchable) [size=4K] I/O ports at a000 [size=64] Memory at d5000000 (32-bit, non-prefetchable) [size=1M] Expansion ROM at <unassigned> [disabled] [size=1M] Capabilities: [dc] Power Management version 2
00:0c.0 SCSI storage controller: Advanced System Products, Inc ABP940-U / ABP960-U (rev 03) Subsystem: Advanced System Products, Inc ASC1300 SCSI Adapter Flags: bus master, medium devsel, latency 32, IRQ 11 I/O ports at 9800 [size=256] Memory at d4800000 (32-bit, non-prefetchable) [size=256] Expansion ROM at <unassigned> [disabled] [size=64K]
01:00.0 VGA compatible controller: nVidia Corporation NV11 DDR (rev b2) (prog-if 00 [VGA]) Subsystem: Micro-star International Co Ltd: Unknown device 8261 Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 11 Memory at d6000000 (32-bit, non-prefetchable) [size=16M] Memory at d8000000 (32-bit, prefetchable) [size=128M] Expansion ROM at d7ff0000 [disabled] [size=64K] Capabilities: [60] Power Management version 2 Capabilities: [44] AGP version 2.0
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This archive was generated by hypermail 2b29 : Thu Feb 07 2002 - 21:00:57 EST