CPU overheat with 2.2

CPU overheat with 2.2

[Simon Richter]

[-- Attachment #1: Type: TEXT/PLAIN, Size: 531 bytes --]

Hi,

I just switched my brother's computer to a 2.2 kernel, and now the CPU
overheats under Linux after about half an hour (reproducible). It works
fine under Windows 95b and worked under Linux 2.0.38.

CPU is a Pentium 166 MMX on an Asus TX97 mainboard, ISA cards are a 3c509
and a Soundblaster.

   Simon

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[-- Attachment #2: .config --]
[-- Type: TEXT/PLAIN, Size: 2438 bytes --]

CONFIG_EXPERIMENTAL=y

CONFIG_M586TSC=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_TSC=y
CONFIG_1GB=y

CONFIG_MODULES=y
CONFIG_MODVERSIONS=y
CONFIG_KMOD=y

CONFIG_NET=y
CONFIG_PCI=y
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_QUIRKS=y
CONFIG_PCI_OPTIMIZE=y
CONFIG_SYSVIPC=y
CONFIG_SYSCTL=y
CONFIG_BINFMT_AOUT=y
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=y
CONFIG_PARPORT=m
CONFIG_PARPORT_PC=m
CONFIG_APM=y
CONFIG_APM_DO_ENABLE=y
CONFIG_APM_CPU_IDLE=y
CONFIG_APM_DISPLAY_BLANK=y

CONFIG_BLK_DEV_FD=m
CONFIG_BLK_DEV_IDE=y
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_BLK_DEV_IDECD=m
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_IDEDMA_AUTO=y
CONFIG_BLK_DEV_LOOP=m
CONFIG_PARIDE_PARPORT=m

CONFIG_PACKET=y
CONFIG_FIREWALL=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_FIREWALL=y
CONFIG_NET_IPIP=m
CONFIG_SKB_LARGE=y
CONFIG_IPV6=y
CONFIG_IPV6_EUI64=y

CONFIG_NETDEVICES=y

CONFIG_DUMMY=m

CONFIG_NET_ETHERNET=y
CONFIG_NET_VENDOR_3COM=y
CONFIG_EL3=m

CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_SERIAL=m
CONFIG_SERIAL_EXTENDED=y
CONFIG_SERIAL_MANY_PORTS=y
CONFIG_SERIAL_SHARE_IRQ=y
CONFIG_SERIAL_DETECT_IRQ=y
CONFIG_UNIX98_PTYS=y
CONFIG_UNIX98_PTY_COUNT=256
CONFIG_PRINTER=m
CONFIG_PRINTER_READBACK=y

CONFIG_WATCHDOG=y

CONFIG_WATCHDOG_NOWAYOUT=y
CONFIG_SOFT_WATCHDOG=m
CONFIG_RTC=y

CONFIG_QUOTA=y
CONFIG_AUTOFS_FS=m
CONFIG_FAT_FS=m
CONFIG_VFAT_FS=m
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_MINIX_FS=m
CONFIG_PROC_FS=y
CONFIG_DEVPTS_FS=y
CONFIG_EXT2_FS=y

CONFIG_NFS_FS=m
CONFIG_NFS_V3=y
CONFIG_SUNRPC=m
CONFIG_LOCKD=m
CONFIG_SMB_FS=m
CONFIG_SMB_NLS_DEFAULT=y
CONFIG_SMB_NLS_REMOTE="cp437"

CONFIG_NLS=y

CONFIG_NLS_DEFAULT="iso8859-1"
CONFIG_NLS_CODEPAGE_437=m
CONFIG_NLS_CODEPAGE_850=m
CONFIG_NLS_ISO8859_1=m
CONFIG_NLS_ISO8859_15=m

CONFIG_VGA_CONSOLE=y
CONFIG_VIDEO_SELECT=y
CONFIG_FB=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_VIDEO_SELECT=y
CONFIG_FB_MATROX=y
CONFIG_FB_MATROX_MILLENIUM=y
CONFIG_FBCON_ADVANCED=y
CONFIG_FBCON_MFB=m
CONFIG_FBCON_CFB2=m
CONFIG_FBCON_CFB4=m
CONFIG_FBCON_CFB8=m
CONFIG_FBCON_CFB16=m
CONFIG_FBCON_CFB24=m
CONFIG_FBCON_CFB32=y
CONFIG_FBCON_VGA=m
CONFIG_FBCON_FONTS=y
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_FONT_SUN12x22=y

CONFIG_SOUND=m
CONFIG_SOUND_OSS=m
CONFIG_SOUND_SB=m
CONFIG_SOUND_YM3812=m

[-- Attachment #3: cpuinfo --]
[-- Type: TEXT/PLAIN, Size: 332 bytes --]

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 5
model		: 4
model name	: Pentium MMX
stepping	: 3
cpu MHz		: 166.589
fdiv_bug	: no
hlt_bug		: no
sep_bug		: no
f00f_bug	: yes
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 1
wp		: yes
flags		: fpu vme de pse tsc msr mce cx8 mmx
bogomips	: 332.59


[-- Attachment #4: modules --]
[-- Type: TEXT/PLAIN, Size: 487 bytes --]

nls_iso8859-1           2404   0 (autoclean)
ide-cd                 24056   0 (autoclean)
cdrom                  27516   0 (autoclean) [ide-cd]
isofs                  17276   0 (autoclean)
autofs                  9484   2 (autoclean)
nfs                    68884   2 (autoclean)
lockd                  45168   1 (autoclean) [nfs]
sunrpc                 63652   1 (autoclean) [nfs lockd]
3c509                   5968   1 (autoclean)
serial                 24740   1 (autoclean)

[-- Attachment #5: devices --]
[-- Type: TEXT/PLAIN, Size: 506 bytes --]

00:00.0 Host bridge: Intel Corporation 430TX - 82439TX MTXC (rev 01)
00:01.0 ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 01)
00:01.1 IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 01)
00:01.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01)
00:01.3 Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 01)
00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RT8139 (rev 10)
00:0c.0 VGA compatible controller: Matrox Graphics, Inc. MGA 2064W [Millennium] (rev 01)

Re: CPU overheat with 2.2

[Mikael Pettersson]

Simon Richter writes:
 > I just switched my brother's computer to a 2.2 kernel, and now the CPU
 > overheats under Linux after about half an hour (reproducible). It works
 > fine under Windows 95b and worked under Linux 2.0.38.
 > 
 > CPU is a Pentium 166 MMX on an Asus TX97 mainboard, ISA cards are a 3c509
 > and a Soundblaster.
 > ...
 > CONFIG_APM=y
 > CONFIG_APM_DO_ENABLE=y
 > CONFIG_APM_CPU_IDLE=y
 > CONFIG_APM_DISPLAY_BLANK=y

Try leaving CONFIG_APM_CPU_IDLE unset. I've learned the hard way that this
option doesn't do any good on many boards, and actually can _increase_ the
CPU temperature by preventing Linux' ordinary "hlt when idle" from triggering.
My ASUS P3B-F + PIII dropped 10+ degrees C when I unset CONFIG_APM_CPU_IDLE.
YMMW, of course.

/Mikael

Re: CPU overheat with 2.2

[Jussi Hamalainen]

On Thu, 17 May 2001, Simon Richter wrote:

> CPU is a Pentium 166 MMX on an Asus TX97 mainboard, ISA cards are a 3c509
> and a Soundblaster.

The Asus TX97 is known to be a CPU toaster. I've replaced dozens of
them because of overheating problems. I don't know why the problem
seems to come up with Linux though.

-- 
-=[ Count Zero / TBH - Jussi Hämäläinen - email count@theblah.org ]=-

Re: CPU overheat with 2.2

[Simon Richter]

On Thu, 17 May 2001, Jussi Hamalainen wrote:

> > CPU is a Pentium 166 MMX on an Asus TX97 mainboard, ISA cards are a 3c509
> > and a Soundblaster.

> The Asus TX97 is known to be a CPU toaster. I've replaced dozens of
> them because of overheating problems. I don't know why the problem
> seems to come up with Linux though.

Hrm, it has worked with 2.0 for two years now, with CPU temperature never
exceeding 40 degrees Celsius... :-/

   Simon

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Re: CPU overheat with 2.2

[Nils Holland]

On Thursday 17 May 2001 16:45, Simon Richter wrote:
> On Thu, 17 May 2001, Jussi Hamalainen wrote:
> > > CPU is a Pentium 166 MMX on an Asus TX97 mainboard, ISA cards are a
> > > 3c509 and a Soundblaster.
> >
> > The Asus TX97 is known to be a CPU toaster. I've replaced dozens of
> > them because of overheating problems. I don't know why the problem
> > seems to come up with Linux though.
>
> Hrm, it has worked with 2.0 for two years now, with CPU temperature never
> exceeding 40 degrees Celsius... :-/

Yes, this problem is indeed strange. I once had it happening here, and I 
tried several things (playing around with kernel config options, etc) but 
nothing would help. However, by now that board has been replaced so I can 
offer no more advice.

Greetings
Nils

-- 
----------------------------------------------------------
Nils Holland - nils@nightcastleproductions.org
NightCastle Productions - Linux in Tiddische, Germany
http://www.nightcastleproductions.org
"They asked me where this earthquake would begin,
 I offered to let them feel my pulse."
----------------------------------------------------------