Hi,
I have the same problem with APM as Oliver Feiler, described in
http://marc.theaimsgroup.com/?l=linux-kernel&m=100470206915414&w=2
(in short the system hangs after resume from suspend)
But I have made some research about it and found some pretty interesting
facts:
- this problem is present on Acer TravelMate 21x series (also with the newest
BIOS)
- all kernel versions I've tested have this problem 2.4.7 - 2.4.18
- the problem occurs even if you have disabled all possible-problematic
drivers in kernel (PCMCIA, USB, specific ALI support for IDE, sound, ...)
- it is not caused by user-mode daemons (apmd, cardmgr, usbmgr)
- kernel gives no output about the hang (nothing in all possible logs, no
oops etc.)
- if apmd is running all resume actions are done
- no user input is accepted but console and even X are restored perfectly
- all functions in apm.c (like 'suspend') are exited normally without any
error
- ^^^ MOST IMPORTANT ^^^ the kernel doesn't hang, it loops in 5-6 seconds
loop with the fact that the time always returns to the time at the
beginning; this behaviour could be seen if you try this command
echo "start"; apm -s; echo "finish"; while true; do date; done
and it displays the right current time for 5 to 6 seconds and the time
displaying continues but the time always returns to the starting time;
this behaviour is infinite till the computer is powered off.
The same behaviour occurs also if the 'date' loop is started as background
process and then the 'apm -s'.
Any ideas?
Jan "Pogo" Mynarik
Some computer and system information:
/proc/version:
Linux version 2.4.18 (root@anduril) (gcc version 2.95.4 20011002 (Debian
prerelease)) #1 Sat Mar 2 00:05:41 CET 2002
ver_linux:
BUT THE BUG IS NOT CAUSED BY VARIOUS KERNEL CONFIGURATION (already tested)
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
Linux anduril 2.4.18 #1 Sat Mar 2 00:05:41 CET 2002 i686 unknown
Gnu C 2.95.4
Gnu make 3.79.1
util-linux 2.11n
mount 2.11n
modutils 2.4.13
e2fsprogs 1.26
reiserfsprogs 3.x.1a
pcmcia-cs 3.1.33
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 njbfs pcnet_cs 8390 nls_iso8859-2 nls_cp437 vfat fat ext2 usb-ohci usbcore trident soundcore ac97_codec apm
lspci -vvv
00:00.0 Host bridge: Acer Laboratories Inc. [ALi] M1621 (rev 01)
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
Region 0: Memory at e0000000 (32-bit, prefetchable) [size=64M]
Capabilities: <available only to root>
00:01.0 PCI bridge: Acer Laboratories Inc. [ALi] M5247 (rev 01) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >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: 80100000-818fffff
Prefetchable memory behind bridge: fff00000-000fffff
BridgeCtl: Parity- SERR- NoISA- VGA+ MAbort- >Reset- FastB2B-
00:06.0 Multimedia audio controller: Acer Laboratories Inc. [ALi] M5451 PCI South Bridge Audio (rev 01)
Subsystem: Acer Incorporated [ALI]: Unknown device 1019
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: 32 (500ns min, 6000ns max)
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at 8000 [size=256]
Region 1: Memory at 81a00000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <available only to root>
00:07.0 ISA bridge: Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge [Aladdin IV]
Subsystem: Acer Incorporated [ALI]: Unknown device 1019
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: <available only to root>
00:10.0 IDE interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev c3) (prog-if fa)
Subsystem: Acer Incorporated [ALI]: Unknown device 1019
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: 32 (500ns min, 1000ns max)
Interrupt: pin A routed to IRQ 15
Region 4: I/O ports at 7050 [size=16]
Capabilities: <available only to root>
00:11.0 Bridge: Acer Laboratories Inc. [ALi] M7101 PMU
Subsystem: Acer Incorporated [ALI]: Unknown device 1019
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-
00:13.0 CardBus bridge: O2 Micro, Inc. OZ6812 Cardbus Controller (rev 05)
Subsystem: Acer Incorporated [ALI]: Unknown device 1019
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 17800000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=02, subordinate=05, sec-latency=176
Memory window 0: 17c00000-17fff000 (prefetchable)
Memory window 1: 18000000-183ff000
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
00:14.0 USB Controller: Acer Laboratories Inc. [ALi] M5237 USB (rev 03) (prog-if 10 [OHCI])
Subsystem: Acer Incorporated [ALI]: Unknown device 1019
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: 32 (20000ns max), cache line size 08
Interrupt: pin A routed to IRQ 11
Region 0: Memory at 81c00000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <available only to root>
01:00.0 VGA compatible controller: Trident Microsystems: Unknown device 8620 (rev 5d) (prog-if 00 [VGA])
Subsystem: Acer Incorporated [ALI]: Unknown device 1019
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 80800000 (32-bit, non-prefetchable) [size=8M]
Region 1: Memory at 80100000 (32-bit, non-prefetchable) [size=128K]
Region 2: Memory at 81000000 (32-bit, non-prefetchable) [size=8M]
Expansion ROM at 80120000 [disabled] [size=64K]
Capabilities: <available only to root>