PROBLEM: 2.4.21-rcX hangs when accessing HW clock on Toshiba laptop

Hi, this is the first time that I post a bug relating to the Linux kernel, so if I'm not including enough information, please tell me what else is needed. I understand that the kernel being a critical system element makes a lot of information be needed in order to solve bugs.

I'll try to follow the form given for bug reports:

1. Kernel 2.4.21-rcX hangs when trying to access HW clock on a Toshiba DynaBook V4/493PMHW

2. The program hwclock and thus the /etc/init.d scripts hwclock.sh and hwclockfirst.sh are run the computer freezes. No response from the keyboard or mouse. The cursor keeps blinking forever after the Enter key is pressed if 'hwclock --show' is run, for instance, or the computer hangs when it comes to adjust the system clock from the hardware clock while running the /etc/init.d scripts. The HW clock in 2.4.20 works perfectly.

3. Module: Character devices ---> Enhanced Real Time Clock Support

4. Linux version 2.4.21-rc7-ac1 (root@roamer) (gcc version 2.95.4 20011002 (Debian prerelease)) -- Also happened in rc2 and rc5.

5. No Oops...

6. hwclock --show or /etc/init.d/hwclock.sh

7.1. ver_linux :
If some fields are empty or look unusual you may have an old version. Compare to the current minimal requirements in Documentation/Changes.

Linux roamer 2.4.21-rc7-ac1 #1 Wed Jun 4 21:22:19 CEST 2003 i686 unknown

Gnu C                  2.95.4
Gnu make               3.79.1
util-linux             2.11n
mount                  2.11n
modutils               2.4.15
e2fsprogs              1.27
reiserfsprogs          3.x.1b
pcmcia-cs              3.1.33
PPP                    2.4.1
Linux C Library        2.2.5
Dynamic linker (ldd)   2.2.5
Procps                 2.0.7
Net-tools              1.60
Console-tools          0.2.3
Sh-utils               2.0.11

Modules Loaded

7.2. cat /proc/cpuinfo :
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 11
model name : Intel(R) Pentium(R) III Mobile CPU 933MHz
stepping : 1
cpu MHz : 929.534
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca
cmov pat pse36 mmx fxsr sse
bogomips : 1854.66

7.3. No loaded modules

7.4. cat /proc/ioports:
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
0376-0376 : ide1
03c0-03df : vga+
03f6-03f6 : ide0
0cf8-0cff : PCI conf1
1000-10ff : ALi Corporation M5451 PCI AC-Link Controller Audio Device
1000-10ff : ALi Audio Accelerator
4000-40ff : PCI CardBus #02
4400-44ff : PCI CardBus #02
4800-48ff : PCI CardBus #03
4c00-4cff : PCI CardBus #03
ed00-edff : Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+
ed00-edff : 8139too
ee00-ee3f : ALi Corporation M7101 PMU
ef00-ef1f : ALi Corporation M7101 PMU
eff0-efff : ALi Corporation M5229 IDE
eff0-eff7 : ide0
eff8-efff : ide1

cat /proc/iomem :
00000000-0009fbff : System RAM
0009fc00-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000e0000-000effff : Extension ROM
000f0000-000fffff : System ROM
00100000-0efeffff : System RAM
00100000-00291b77 : Kernel code
00291b78-0032cf3f : Kernel data
0eff0000-0effffff : ACPI Tables
0f000000-0fffffff : reserved
10000000-10000fff : ALi Corporation M5451 PCI AC-Link Controller Audio Device
10001000-100017ff : Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)
10001800-100019ff : Toshiba America Info Systems SD TypA Controller 10002000-10002fff : Texas Instruments PCI1410 PC card Cardbus Controller 10003000-10003fff : Toshiba America Info Systems ToPIC95 PCI to Cardbus Bridge with ZV Support
10004000-10007fff : Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)
10400000-107fffff : PCI CardBus #02
10800000-10bfffff : PCI CardBus #02
10c00000-10ffffff : PCI CardBus #03
11000000-113fffff : PCI CardBus #03
a0000000-a0000fff : card services
f0000000-f3ffffff : ALi Corporation M1644/M1644T Northbridge+Trident f7efef00-f7efefff : Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+
f7efef00-f7efefff : 8139too
f7eff000-f7efffff : ALi Corporation USB 1.1 Controller
f7eff000-f7efffff : usb-ohci
f7f00000-fdffffff : PCI Bus #01
f7ff8000-f7ffffff : Trident Microsystems CyberBlade XPAi1 f8000000-f9ffffff : Trident Microsystems CyberBlade XPAi1 fbc00000-fbffffff : Trident Microsystems CyberBlade XPAi1 fc000000-fdffffff : Trident Microsystems CyberBlade XPAi1
fff80000-ffffffff : reserved

7.5. lspci -vvv :
00:00.0 Host bridge: Acer Laboratories Inc. [ALi]: Unknown device 1644 (rev 01)
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ >SERR- <PERR+
Latency: 0
Region 0: Memory at f0000000 (32-bit, prefetchable) [size=64M]
Capabilities: [b0] AGP version 2.0
Status: RQ=27 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
Capabilities: [a4] Power Management version 1
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:01.0 PCI bridge: Acer Laboratories Inc. [ALi] M5247 (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort-
<TAbort-
<MAbort- >SERR- <PERR-
Latency: 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 0000f000-00000fff
Memory behind bridge: f7f00000-fdffffff Prefetchable memory behind bridge: fff00000-000fffff
BridgeCtl: Parity- SERR- NoISA- VGA+ MAbort- >Reset- FastB2B-

00:02.0 USB Controller: Acer Laboratories Inc. [ALi] M5237 USB (rev 03) (prog-if 10 [OHCI])
Subsystem: Toshiba America Info Systems: Unknown device 0004
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 64 (20000ns max), cache line size 08
Interrupt: pin A routed to IRQ 5
Region 0: Memory at f7eff000 (32-bit, non-prefetchable)
[size=4K]
Capabilities: [60] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:04.0 IDE interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev c3) (prog-if
f0)
Subsystem: Toshiba America Info Systems: Unknown device 0004
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 64 (500ns min, 1000ns max)
Interrupt: pin A routed to IRQ 255
Region 4: I/O ports at eff0 [size=16]
Capabilities: [60] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:06.0 Multimedia audio controller: Acer Laboratories Inc. [ALi] M5451 PCI South Bridge Audio (rev 01)
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR+ <PERR+

        Latency: 64 (500ns min, 6000ns max)
        Interrupt: pin A routed to IRQ 11
        Region 0: I/O ports at 1000 [size=256]
        Region 1: Memory at 10000000 (32-bit, non-prefetchable)

[size=4K]
Capabilities: [dc] Power Management version 2
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:07.0 ISA bridge: Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge [Aladdin IV]
Subsystem: Toshiba America Info Systems: Unknown device 0004
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Capabilities: [a0] Power Management version 1
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:08.0 Bridge: Acer Laboratories Inc. [ALi] M7101 PMU
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-

00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 10)
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 64 (8000ns min, 16000ns max)
Interrupt: pin A routed to IRQ 7
Region 0: I/O ports at ed00 [size=256]
Region 1: Memory at f7efef00 (32-bit, non-prefetchable)
[size=256]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0c.0 FireWire (IEEE 1394): Texas Instruments: Unknown device 8023 (prog-if 10 [OHCI])
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 7
Region 0: Memory at 10001000 (32-bit, non-prefetchable)
[disabled] [size=2K]

        Region 1: Memory at 10004000 (32-bit, non-prefetchable)

[disabled] [size=16K]
Capabilities: [44] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=55mA
PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D3 PME-Enable- DSel=0 DScale=0 PME-

00:10.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller (rev 01)
Subsystem: Lucent Technologies: Unknown device ab01
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 168, cache line size 08
Interrupt: pin A routed to IRQ 6
Region 0: Memory at 10002000 (32-bit, non-prefetchable)
[size=4K]

        Bus: primary=00, secondary=02, subordinate=02, sec-latency=176
        Memory window 0: 10400000-107ff000 (prefetchable)
        Memory window 1: 10800000-10bff000
        I/O window 0: 00004000-000040ff
        I/O window 1: 00004400-000044ff
        BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+ 16bInt+

PostWrite+
16-bit legacy interface ports at 0001

00:11.0 CardBus bridge: Toshiba America Info Systems ToPIC95 PCI to Cardbus Bridge with ZV Support (rev 33)
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort-
<TAbort-
<MAbort- >SERR- <PERR-

        Latency: 168
        Interrupt: pin A routed to IRQ 11
        Region 0: Memory at 10003000 (32-bit, non-prefetchable)
[size=4K]
        Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
        Memory window 0: 10c00000-10fff000 (prefetchable)
        Memory window 1: 11000000-113ff000
        I/O window 0: 00004800-000048ff
        I/O window 1: 00004c00-00004cff
        BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt+

PostWrite+
16-bit legacy interface ports at 0001

00:12.0 System peripheral: Toshiba America Info Systems: Unknown device 0805 (rev 05)
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 11
Region 0: Memory at 10001800 (32-bit, non-prefetchable)
[disabled] [size=512]
Capabilities: [80] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D3 PME-Enable- DSel=0 DScale=0 PME-

01:00.0 VGA compatible controller: Trident Microsystems: Unknown device 8820 (rev 82) (prog-if 00 [VGA])
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 8
Interrupt: pin A routed to IRQ 6
Region 0: Memory at fc000000 (32-bit, non-prefetchable)
[size=32M]

        Region 1: Memory at fbc00000 (32-bit, non-prefetchable)
[size=4M]
        Region 2: Memory at f8000000 (32-bit, non-prefetchable)
[size=32M]
        Region 3: Memory at f7ff8000 (32-bit, non-prefetchable)

[size=32K]
Expansion ROM at <unassigned> [disabled] [size=64K]
Capabilities: [80] AGP version 2.0
Status: RQ=32 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
Capabilities: [90] Power Management version 2
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

7.6. cat /proc/scsi/scsi :
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: TEAC Model: DW-28E Rev: 7.0A
Type: CD-ROM ANSI SCSI revision: 02

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Problem is related to a number of toshiba and Intel implementations running ACPI since rel 20030424.

Temporary solution:

1) Boot with single or ACPI=off

2) Add --directisa to lines containing hwclock in rc.sysinit and halt

3) Reboot normally

Regards
Michael

From what you tell me, do I have to deduce that the solution depends on

Quoted 22 lines

Hi, this is the first time that I post a bug relating to the Linux kernel, so if I'm not including enough information, please tell me what else is needed. I understand that the kernel being a critical system element makes a lot of information be needed in order to solve bugs.

I'll try to follow the form given for bug reports:

1. Kernel 2.4.21-rcX hangs when trying to access HW clock on a Toshiba DynaBook V4/493PMHW

2. The program hwclock and thus the /etc/init.d scripts hwclock.sh and hwclockfirst.sh are run the computer freezes. No response from the keyboard or mouse. The cursor keeps blinking forever after the Enter key is pressed if 'hwclock --show' is run, for instance, or the computer hangs when it comes to adjust the system clock from the hardware clock while running the /etc/init.d scripts. The HW clock in 2.4.20 works perfectly.

3. Module: Character devices ---> Enhanced Real Time Clock Support

4. Linux version 2.4.21-rc7-ac1 (root@roamer) (gcc version 2.95.4 20011002 (Debian prerelease)) -- Also happened in rc2 and rc5.