New: Powersave feature not available on VIA C7-D CPU's
http://bugzilla.kernel.org/show_bug.cgi?id=10562
Summary: Powersave feature not available on VIA C7-D CPU's
Product: Power Management
Version: 2.5
KernelVersion: 2.6.23
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: cpufreq
AssignedTo: [email protected]
ReportedBy: [email protected]
Latest working kernel version: N/A
Earliest failing kernel version: 2.6.23
Distribution: Gentoo Linux
Hardware Environment:
Motherboard: VIA VB7001G
RAM: 1GB Kingston DDR2 667MHz (runs @533MHz)
HDD: Samsung 500GB SATA
# lspci 00:00.0 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro Host Bridge 00:00.1 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro Host Bridge 00:00.2 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro Host Bridge 00:00.3 Host bridge: VIA Technologies, Inc. PT890 Host Bridge 00:00.4 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro Host Bridge 00:00.7 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro Host Bridge 00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge 00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID Controller (rev 80) 00:0f.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) 00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86) 00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800/K8T890 South] 00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60) 00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 78) 01:00.0 VGA compatible controller: VIA Technologies, Inc. UniChrome Pro IGP (rev 01)
Software Environment:
Gentoo Hardened Server - No X.org
Problem Description:
When I try to insert either "e_powersaver" or "acpi-cpufreq" module, modprobe tells me "No such device".
Steps to reproduce:
# modprobe e_powersaver FATAL: Error inserting e_powersaver (/lib/modules/2.6.23-hardened-r9/kernel/arch/i386/kernel/cpu/cpufreq/e_powersaver.ko): No such device
# modprobe acpi-cpufreq FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.23-hardened-r9/kernel/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.ko): No such device
No message seems to be added to both dmesg and syslog.
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[Bug 10562] Powersave feature not available on VIA C7-D CPU's
http://bugzilla.kernel.org/show_bug.cgi?id=10562
------- Comment #1 from [email protected] 2008-04-27 04:25 ------- I also tried both vanilla kernel versions 2.6.24 and .25.
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[Bug 10562] Powersave feature not available on VIA C7-D CPU's
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=10562
------- Comment #2 from [email protected] 2008-04-28 08:22 ------- Do you run the latest BIOS?
If not, better update and try again.
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[Bug 10562] Powersave feature not available on VIA C7-D CPU's
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=10562
------- Comment #3 from [email protected] 2008-04-29 05:29 ------- I tried to update the BIOS and the VIA flash utility corrupted it! I'm going to retry when I receive the motherboard's replacement.
There is something I can try that avoids BIOS update? I'm kinda scared... :(
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[Bug 10562] Powersave feature not available on VIA C7-D CPU's
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=10562
------- Comment #4 from [email protected] 2008-04-29 11:40 ------- Below discussion from Via Arena forums.
Quoted 7 lines
Dear All,
C7-D Model A (1.5/2 GHz) and model D (1.5 Ghz) dosen't support PowerSaver.
C7-D Model D (1.8/2 GHz) support PowerSaver (P-States P0-P1).
Thee_powersaverdriver of kernel 2.6.21-rc6 need to update for new VIA C7/C7D/C7M/Eden Model D CPU. VIA is testing it.
If the driver was tested by VIA QA approval, VIA will deliver it.
And they did. Patch was available from Viaarena. I don't know it's current state.
Quoted 36 lines
BRs,
VenusHi Venus,
What are the differences between model A and B.
Also how can I know which I have?Thanks!
Dear nori,
#cat
/proc/cpuinfoModel A CPU=>
processor : 0
vendor_id: CentaurHauls
cpu family : 6
model : 10
model name : VIA Esther processor 1500MHz
stepping : 9
cpu MHz : 800.040Model D CPU=>
processor : 0vendor_id: CentaurHauls
cpu family : 6
model : 13
model name : VIA C7-M Processor 2000MHz
stepping : 0
cpu MHz : 2000.022BRs,
Venus
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[Bug 10562] Powersave feature not available on VIA C7-D CPU's
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=10562
------- Comment #5 from [email protected] 2008-04-29 12:03 ------- I found the patch here:
http://www.viaarena.com/default.aspx?PageID=22&DSCat=32&DCatType=3.
Quote from that page: "The voltage can be adjusted on C7 CPU". It doesn't differ between models.
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[Bug 10562] Powersave feature not available on VIA C7-D CPU's
In reply to [email protected]http://bugzilla.kernel.org/show_bug.cgi?id=10562
[email protected] changed:
What |Removed |Added
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CC| |[email protected] AssignedTo|[email protected] |[email protected] Status|NEW |ASSIGNED
------- Comment #6 from [email protected] 2008-04-30 03:21 ------- Works for me with a 1,2 GHz Esther CPU (I will post cpuinfo when I am at home). I didn't check the very details as everything just worked out of the box with latest openSUSE 11.0.
I have a Jetway mainboard and they have some "default" ACPI implementation put into their BIOS. Even fan and temperature are exposed via ACPI. Also the cpufreq states are exposed via ACPI because it's acpi-cpufreq providing cpufreq.
Therefore I am pretty sure you have an ACPI BIOS problem.
Can you attach dmesg and acpidump output, pls.
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