* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related [not found] <200109011456.f81EutI16218@penguin.transmeta.com> @ 2001-09-01 19:21 ` Tester 2001-09-02 1:25 ` Linus Torvalds 2001-09-04 22:17 ` Tester 1 sibling, 1 reply; 12+ messages in thread From: Tester @ 2001-09-01 19:21 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-kernel Hi, I dont have ACPI enabled, but I have APM support... Should I try enabling ACPI? And the result of dmesg follows: Linux version 2.4.9 (Tester@TesterTop) (gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-85)) #15 Fri Aug 31 16:04:04 EDT 2001 BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009f800 (usable) BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved) BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 000000000fff0000 (usable) BIOS-e820: 000000000fff0000 - 000000000fffec00 (ACPI data) BIOS-e820: 000000000fffec00 - 0000000010000000 (ACPI NVS) BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved) On node 0 totalpages: 65520 zone(0): 4096 pages. zone(1): 61424 pages. zone(2): 0 pages. Kernel command line: auto BOOT_IMAGE=linux ro root=305 BOOT_FILE=/boot/vmlinuz Initializing CPU#0 Detected 206.245 MHz processor. Console: colour VGA+ 80x25 Calibrating delay loop... 430.89 BogoMIPS Memory: 255768k/262080k available (887k kernel code, 5924k reserved, 292k data, 176k init, 0k highmem) Dentry-cache hash table entries: 32768 (order: 6, 262144 bytes) Inode-cache hash table entries: 16384 (order: 5, 131072 bytes) Mount-cache hash table entries: 4096 (order: 3, 32768 bytes) Buffer-cache hash table entries: 16384 (order: 4, 65536 bytes) Page-cache hash table entries: 65536 (order: 6, 262144 bytes) CPU: Before vendor init, caps: 0383f9ff 00000000 00000000, vendor = 0 CPU: L1 I cache: 16K, L1 D cache: 16K CPU: L2 cache: 128K Intel machine check architecture supported. Intel machine check reporting enabled on CPU#0. CPU: After vendor init, caps: 0383f9ff 00000000 00000000 00000000 CPU: After generic, caps: 0383f9ff 00000000 00000000 00000000 CPU: Common caps: 0383f9ff 00000000 00000000 00000000 CPU: Intel Celeron (Coppermine) stepping 0a Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... 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 0xfd9af, last bus=3 PCI: Using configuration type 1 PCI: Probing PCI hardware PCI: Using IRQ router PIIX [8086/7198] at 00:07.0 Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 IBM machine detected. Enabling interrupts during APM calls. apm: BIOS version 1.2 Flags 0x03 (Driver version 1.14) Starting kswapd v1.8 Journalled Block Device driver loaded pty: 256 Unix98 ptys configured block: 128 slots per queue, batch=16 Uniform Multi-Platform E-IDE driver Revision: 6.31 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx PIIX4: IDE controller on PCI bus 00 dev 39 PIIX4: chipset revision 0 PIIX4: not 100% native mode: will probe irqs later ide0: BM-DMA at 0x1890-0x1897, BIOS settings: hda:DMA, hdb:DMA hda: IC25N015ATDA04-0, ATA DISK drive hdb: CD-224E, ATAPI CD/DVD-ROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 hda: 29498175 sectors (15103 MB) w/347KiB Cache, CHS=1950/240/63 hdb: ATAPI 24X CD-ROM drive, 128kB Cache Uniform CD-ROM driver Revision: 3.12 Partition check: hda: hda1 hda2 < hda5 hda6 hda7 > NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP, IGMP IP: routing cache hash table of 2048 buckets, 16Kbytes TCP: Hash tables configured (established 16384 bind 16384) IPv4 over IPv4 tunneling driver NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. VFS: Mounted root (ext3 filesystem) readonly. Freeing unused kernel memory: 176k freed Adding Swap: 529160k swap-space (priority -1) usb.c: registered new driver usbdevfs usb.c: registered new driver hub usb-uhci.c: $Revision: 1.259 $ time 16:13:30 Aug 31 2001 usb-uhci.c: High bandwidth mode enabled PCI: Found IRQ 11 for device 00:07.2 usb-uhci.c: USB UHCI at I/O 0x18a0, IRQ 11 usb-uhci.c: Detected 2 ports usb.c: new USB bus registered, assigned bus number 1 hub.c: USB hub found hub.c: 2 ports detected usb-uhci.c: v1.251:USB Universal Host Controller Interface driver EXT3 FS 2.4-0.9.6-249, 18 Aug 2001 on ide0(3,5), internal journal eepro100.c:v1.09j-t 9/29/99 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/eepro100.html eepro100.c: $Revision: 1.36 $ 2000/11/17 Modified by Andrey V. Savochkin <saw@saw.sw.com.sg> and others PCI: Found IRQ 11 for device 00:03.0 PCI: Sharing IRQ 11 with 00:03.1 eth0: OEM i82557/i82558 10/100 Ethernet, 00:03:47:8E:AE:4D, IRQ 11. Board assembly a30469-008, Physical connectors present: RJ45 Primary interface chip i82555 PHY #1. Secondary interface chip i82555. General self-test: passed. Serial sub-system self-test: passed. Internal registers self-test: passed. ROM checksum self-test: passed (0x3258698e). Intel 810 + AC97 Audio, version 0.03, 16:13:09 Aug 31 2001 PCI: Found IRQ 11 for device 00:00.1 PCI: Setting latency timer of device 00:00.1 to 64 i810: Intel 440MX found at IO 0x1800 and 0x2000, IRQ 11 ac97_codec: AC97 Audio codec, id: 0x4352:0x5935 (Unknown) i810_audio: setting clocking to 177230 CSLIP: code copyright 1989 Regents of the University of California PPP generic driver version 2.4.1 Loading Lucent Modem Controller driver version 6.00 Detected Parameters Irq=11 BaseAddress=0x1880 ComAddress=0x0 Lucent Modem Interface driver version 6.00 (2001-01-26) with SHARE_IRQ enabled ttyLT00 at 0x1880 (irq = 11) is a Lucent Modem PPP BSD Compression module registered PPP Deflate Compression module registered -- Olivier Crete Tester tester@videotron.ca ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related 2001-09-01 19:21 ` Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related Tester @ 2001-09-02 1:25 ` Linus Torvalds 2001-09-02 6:29 ` Tester 0 siblings, 1 reply; 12+ messages in thread From: Linus Torvalds @ 2001-09-02 1:25 UTC (permalink / raw) To: Tester; +Cc: linux-kernel On Sat, 1 Sep 2001, Tester wrote: > > I dont have ACPI enabled, but I have APM support... > Should I try enabling ACPI? It would be interesting to hear what happens. I bet you won't be happy with it compared to APM due to the lack of proper suspend etc, but from a testing standpoint it would be good to hear what happens, and what /proc/interrupts and ACPI report about the thing.. Linus ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related 2001-09-02 1:25 ` Linus Torvalds @ 2001-09-02 6:29 ` Tester 2001-09-02 18:22 ` Gunther Mayer 0 siblings, 1 reply; 12+ messages in thread From: Tester @ 2001-09-02 6:29 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-kernel Hi, ACPI doesnt give a different result.. using 2.4.9-ac5 with pnpbios enabled doesnt change anything either... Tester On Sat, 1 Sep 2001, Linus Torvalds wrote: > > On Sat, 1 Sep 2001, Tester wrote: > > > > I dont have ACPI enabled, but I have APM support... > > Should I try enabling ACPI? > > It would be interesting to hear what happens. I bet you won't be happy > with it compared to APM due to the lack of proper suspend etc, but from a > testing standpoint it would be good to hear what happens, and what > /proc/interrupts and ACPI report about the thing.. > > Linus > > -- Tester tester@videotron.ca Those who do not understand Unix are condemned to reinvent it, poorly. -- Henry Spencer ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related 2001-09-02 6:29 ` Tester @ 2001-09-02 18:22 ` Gunther Mayer 2001-09-02 21:51 ` Tester 0 siblings, 1 reply; 12+ messages in thread From: Gunther Mayer @ 2001-09-02 18:22 UTC (permalink / raw) To: Tester; +Cc: linux-kernel Tester wrote: > > Hi, > > ACPI doesnt give a different result.. using 2.4.9-ac5 with pnpbios enabled > doesnt change anything either... On PNPBIOS: recently a hard hang was fixed in -ac by reserving port ranges of PNP0c02 (or 0c01?) devices (else yenta would choose these...) Can you compare "lspnp -v" to see if there is another builtin device in conflict with the yenta ioport window allocation ? ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related 2001-09-02 18:22 ` Gunther Mayer @ 2001-09-02 21:51 ` Tester 2001-09-02 22:38 ` Alan Garrison 0 siblings, 1 reply; 12+ messages in thread From: Tester @ 2001-09-02 21:51 UTC (permalink / raw) To: Gunther Mayer; +Cc: linux-kernel Hi, I dont see any conflicts with ac5, and it still doesnt work... I think Linus's explanation of the problem is more probable... Also, I have not been able to reproduce the crash with ACPI recently.. It seems that if I have ACPI, but no APM, it does freeze... Kernel with APM or with no power management at all will crash under the same circumstances... But how do I fix that... I dont know... show version: ACPI enabled kernel works fine... Everything else freezes with yenta... Tester On Sun, 2 Sep 2001, Gunther Mayer wrote: > Tester wrote: > > > > Hi, > > > > ACPI doesnt give a different result.. using 2.4.9-ac5 with pnpbios enabled > > doesnt change anything either... > > On PNPBIOS: recently a hard hang was fixed in -ac by reserving port > ranges of PNP0c02 (or 0c01?) devices (else yenta would choose these...) > > Can you compare "lspnp -v" to see if there is another builtin device > in conflict with the yenta ioport window allocation ? > -- Tester tester@videotron.ca Those who do not understand Unix are condemned to reinvent it, poorly. -- Henry Spencer ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related 2001-09-02 21:51 ` Tester @ 2001-09-02 22:38 ` Alan Garrison 0 siblings, 0 replies; 12+ messages in thread From: Alan Garrison @ 2001-09-02 22:38 UTC (permalink / raw) To: linux-kernel On Sun, Sep 02, 2001 at 05:51:19PM -0400, Tester wrote: > Hi, > > I dont see any conflicts with ac5, and it still doesnt work... I think > Linus's explanation of the problem is more probable... Also, I have not > been able to reproduce the crash with ACPI recently.. It seems that if I > have ACPI, but no APM, it does freeze... Kernel with APM or with no power > management at all will crash under the same circumstances... But how do I > fix that... I dont know... > > show version: > ACPI enabled kernel works fine... > Everything else freezes with yenta... I am in the same boat as Tester. My laptop using kernels 2.4.8, 2.4.9, and a few -ac patches locks every single time when yenta_socket loads. Everything besides yenta_socket seems to work fine (so far). I generally compile APM as a module and I am not loading it on boot, so there are few modules loading on a raw boot. Perhaps I am required to use some sort of PNP setup with 2.4.x? My stupid bios has absolutely no settings regarding pcmcia/pccard. The only half-relevant option is the "PNP OS Installed? Y/N". Using 2.2.19pre17 (stock Debian Potato kernel) works generally fine with i82365/pcnet_cs loaded. If anyone needs more h/w info or would like me to test patches I'd be more than happy to help. ***** 2.4.9 "lspci" output: 00:00.0 Host bridge: Acer Laboratories Inc. [ALi] M1541 (rev 04) 00:01.0 PCI bridge: Acer Laboratories Inc. [ALi] M5243 (rev 04) 00:03.0 CardBus bridge: Texas Instruments PCI1251B 00:03.1 CardBus bridge: Texas Instruments PCI1251B 00:07.0 ISA bridge: Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge [Aladdin IV] (rev 0a) 00:09.0 Multimedia audio controller: ESS Technology ES1978 Maestro 2E (rev 10) 00:0f.0 IDE interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev 20) 00:11.0 Bridge: Acer Laboratories Inc. [ALi] M7101 PMU (rev 09) 00:13.0 USB Controller: Acer Laboratories Inc. [ALi] M5237 USB (rev 03) 01:00.0 VGA compatible controller: ATI Technologies Inc 3D Rage LT Pro AGP-133 (rev dc) > Tester -- alan at __ Corporate Accounts Payable, Nina speaking... Just a moment. alangarrison __ Corporate Accounts Payable, Nina speaking... Just a moment. dot com __ Corporate Accounts Payable, Nina speaking... Just a moment. "all your apt-get are / belong to us dist-upgrade / now for great honour" -MM ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related [not found] <200109011456.f81EutI16218@penguin.transmeta.com> 2001-09-01 19:21 ` Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related Tester @ 2001-09-04 22:17 ` Tester 2001-09-07 15:52 ` Linus Torvalds 1 sibling, 1 reply; 12+ messages in thread From: Tester @ 2001-09-04 22:17 UTC (permalink / raw) To: Linus Torvalds; +Cc: linux-kernel Hi, On Sat, 1 Sep 2001, Linus Torvalds wrote: > In article <Pine.LNX.4.33.0109010022440.1295-100000@TesterTop.PolyDom>, > Olivier Crete <Tester@videotron.ca> wrote: > > > >Ok, I've tried removing different parts of the kernel and I have been able > >to find that the instability (repetable freezes) start to appear when the > >yenta_socket.o module is loaded. I dont see the link between this module > >and the events that trigger the freezes... It crashes when I do the > >following things: use any of the non-keyboard buttons (thinkpad buttons > >and volume control), brightness control, etc.. These buttons fn-X > >combination have in common that they do not generate a scancode as shown > >by showkey. > > What they are doing, however, is to generate a SCI, ie "System Control > Interrupt". Which, I bet you five bucks, is routed to the same interrupt > that your CardBus controller is on. Seems like you may have lost five bucks... When ACPI is enabled the sci is on IRQ 9, while the CardBus controller is on a IRQ 11 along with the Sound card, the ethernet card, the modem and the usb controller. The SCI seems to go to irq 9... and be alone there... The bug does not happen when acpi is enabled tho... So I can't confirm... > So the fact that the system hangs only with the CardBus module loaded > really has nothing to do with the yenta code itself - it's just that > before the yenta module is loaded, the SCI will be entirely ignored. > Once yenta _is_ loaded, however, we have a interrupt handler for the > interrupt and will start accepting it. > > However, the interrupt handler we have is _not_ aware of system > control interrupts. So it won't be able to handle them, and the > interrupts will go on forever - locking up the machine. Where would that loop occur? -- Tester tester@videotron.ca Those who do not understand Unix are condemned to reinvent it, poorly. -- Henry Spencer ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related 2001-09-04 22:17 ` Tester @ 2001-09-07 15:52 ` Linus Torvalds 0 siblings, 0 replies; 12+ messages in thread From: Linus Torvalds @ 2001-09-07 15:52 UTC (permalink / raw) To: Tester; +Cc: linux-kernel On Tue, 4 Sep 2001, Tester wrote: > > > > What they are doing, however, is to generate a SCI, ie "System Control > > Interrupt". Which, I bet you five bucks, is routed to the same interrupt > > that your CardBus controller is on. > > Seems like you may have lost five bucks... When ACPI is enabled the sci is > on IRQ 9, while the CardBus controller is on a IRQ 11 along with > the Sound card, the ethernet card, the modem and the usb controller. The > SCI seems to go to irq 9... and be alone there... The bug does not happen > when acpi is enabled tho... So I can't confirm... No, I think I'll keep my 5 bucks, cheap bastard that I am. The thing is, enabling ACPI will also force the _correct_ routing of the SCI interrupt (assuming ACPI works - it doesn't on all machines), and thus it doesn't show up as some random other irq. Which is why you don't get a lockup. > > However, the interrupt handler we have is _not_ aware of system > > control interrupts. So it won't be able to handle them, and the > > interrupts will go on forever - locking up the machine. > > Where would that loop occur? There won't be any explicit loop - what will happen is that irq12 will stay active, so we will keep on having irq12 interrupts that the CardBus interrupt handler doesn't know what to do with - and immediately when the irq handler returns and acks the interrupt we'll just take the irq again. Over and over. Linus ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e @ 2001-08-31 16:46 Tester 2001-09-01 4:50 ` Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related Olivier Crete 0 siblings, 1 reply; 12+ messages in thread From: Tester @ 2001-08-31 16:46 UTC (permalink / raw) To: Sean Hunter; +Cc: linux-kernel Another thing, Linuxcare has certified this laptop as being compatible with Linux 7.1 http://www.linuxcare.com/labs/certs/ibm/thinkpad/A22e/pada22e-2655-rh7-sys.epl Did they do something that I dont know of? Is there anyone left there? Tester On Fri, 31 Aug 2001, Sean Hunter wrote: > <Possibly not relevant to your problem> It is indeed not relevant.. I dont have any pcmcia card as there is an integrated Network adapter... (Intel EEPro100) > I have a thinkpad and had all sorts of wierd and unpredictable crashes until I > removed the old 3com pcmcia network card and replaced it with a new cardbus > card. The old card works fine in all sorts of other laptops, but the thinkpad > just wasn't having it. > > Since replacing the card its worked great. > </> > > Sean > > On Thu, Aug 30, 2001 at 06:30:27PM -0400, Tester wrote: > > Hi, > > > > Its a 256 megs machine.. Celeron 800.. > > I tried using mem=255M or mem=200M and it did not change anything and > > still crashed. The celeron A22e seems to have the same bios as the A21e... > > > > Btw, I received it as part of a ThinkPad University program (laptop at > > school) from IBM with the old mandrake installed. And they IS guy of the > > university told us that they didnt install the latest released because IBM > > had not approved it... IBM probably already knows of the problem... So a > > message to IBM and IBMers: Why dont you fix your known bugs? > > > > Also it works correctly in w2k, but win2k uses ACPI and not APM (and it > > has a IBM pm driver...) > > > > Tester > > tester@videotron.ca > > > -- Tester tester@videotron.ca Those who do not understand Unix are condemned to reinvent it, poorly. -- Henry Spencer ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related 2001-08-31 16:46 Bizzare crashes on IBM Thinkpad A22e Tester @ 2001-09-01 4:50 ` Olivier Crete 2001-09-01 6:17 ` Gerd Knorr ` (2 more replies) 0 siblings, 3 replies; 12+ messages in thread From: Olivier Crete @ 2001-09-01 4:50 UTC (permalink / raw) To: linux-kernel Hi, Ok, I've tried removing different parts of the kernel and I have been able to find that the instability (repetable freezes) start to appear when the yenta_socket.o module is loaded. I dont see the link between this module and the events that trigger the freezes... It crashes when I do the following things: use any of the non-keyboard buttons (thinkpad buttons and volume control), brightness control, etc.. These buttons fn-X combination have in common that they do not generate a scancode as shown by showkey. -- Olivier Crete Tester tester@videotron.ca oliviercrete@videotron.ca Those who do not understand Unix are condemned to reinvent it, poorly. -- Henry Spencer ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related 2001-09-01 4:50 ` Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related Olivier Crete @ 2001-09-01 6:17 ` Gerd Knorr 2001-09-01 10:08 ` Erik Mouw 2001-09-01 14:56 ` Linus Torvalds 2 siblings, 0 replies; 12+ messages in thread From: Gerd Knorr @ 2001-09-01 6:17 UTC (permalink / raw) To: linux-kernel Olivier Crete wrote: > Hi, > > Ok, I've tried removing different parts of the kernel and I have been able > to find that the instability (repetable freezes) start to appear when the > yenta_socket.o module is loaded. I dont see the link between this module > and the events that trigger the freezes... It crashes when I do the > following things: use any of the non-keyboard buttons (thinkpad buttons > and volume control), brightness control, etc.. These buttons fn-X > combination have in common that they do not generate a scancode as shown > by showkey. Try -ac kernels with PNPBIOS enabled ... Gerd -- Damn lot people confuse usability and eye-candy. ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related 2001-09-01 4:50 ` Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related Olivier Crete 2001-09-01 6:17 ` Gerd Knorr @ 2001-09-01 10:08 ` Erik Mouw 2001-09-01 14:56 ` Linus Torvalds 2 siblings, 0 replies; 12+ messages in thread From: Erik Mouw @ 2001-09-01 10:08 UTC (permalink / raw) To: Olivier Crete; +Cc: linux-kernel On Sat, Sep 01, 2001 at 12:50:30AM -0400, Olivier Crete wrote: > Ok, I've tried removing different parts of the kernel and I have been able > to find that the instability (repetable freezes) start to appear when the > yenta_socket.o module is loaded. I dont see the link between this module > and the events that trigger the freezes... It crashes when I do the > following things: use any of the non-keyboard buttons (thinkpad buttons > and volume control), brightness control, etc.. These buttons fn-X > combination have in common that they do not generate a scancode as shown > by showkey. Hmm, I had a similar kind of freeze when using USB hotplug and PCMCIA. I could solve mine by only having CardBus support in the kernel: # # PCMCIA/CardBus support # CONFIG_PCMCIA=y CONFIG_CARDBUS=y # CONFIG_I82365 is not set # CONFIG_TCIC is not set Erik -- J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department of Electrical Engineering, Faculty of Information Technology and Systems, Delft University of Technology, PO BOX 5031, 2600 GA Delft, The Netherlands Phone: +31-15-2783635 Fax: +31-15-2781843 Email: J.A.K.Mouw@its.tudelft.nl WWW: http://www-ict.its.tudelft.nl/~erik/ ^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related 2001-09-01 4:50 ` Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related Olivier Crete 2001-09-01 6:17 ` Gerd Knorr 2001-09-01 10:08 ` Erik Mouw @ 2001-09-01 14:56 ` Linus Torvalds 2 siblings, 0 replies; 12+ messages in thread From: Linus Torvalds @ 2001-09-01 14:56 UTC (permalink / raw) To: linux-kernel In article <Pine.LNX.4.33.0109010022440.1295-100000@TesterTop.PolyDom>, Olivier Crete <Tester@videotron.ca> wrote: > >Ok, I've tried removing different parts of the kernel and I have been able >to find that the instability (repetable freezes) start to appear when the >yenta_socket.o module is loaded. I dont see the link between this module >and the events that trigger the freezes... It crashes when I do the >following things: use any of the non-keyboard buttons (thinkpad buttons >and volume control), brightness control, etc.. These buttons fn-X >combination have in common that they do not generate a scancode as shown >by showkey. What they are doing, however, is to generate a SCI, ie "System Control Interrupt". Which, I bet you five bucks, is routed to the same interrupt that your CardBus controller is on. So the fact that the system hangs only with the CardBus module loaded really has nothing to do with the yenta code itself - it's just that before the yenta module is loaded, the SCI will be entirely ignored. Once yenta _is_ loaded, however, we have a interrupt handler for the interrupt and will start accepting it. However, the interrupt handler we have is _not_ aware of system control interrupts. So it won't be able to handle them, and the interrupts will go on forever - locking up the machine. The problem here is that the SCI really _should_not_ generate a regular interrupt unless the system is ready to accept it. The SCI can be routed to a SMI (system management interrupt, which puts the CPU in SMM mode, at which point the BIOS SMM routines can handle it), _or_ if you have ACPI enabled, ACPI should be (a) enabling the SCI->regular irq routine _and_ (b) actually handling the irq. Do you have ACPI enabled in your kernel? What are the bootup messages? Linus ^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2001-09-07 15:57 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <200109011456.f81EutI16218@penguin.transmeta.com>
2001-09-01 19:21 ` Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related Tester
2001-09-02 1:25 ` Linus Torvalds
2001-09-02 6:29 ` Tester
2001-09-02 18:22 ` Gunther Mayer
2001-09-02 21:51 ` Tester
2001-09-02 22:38 ` Alan Garrison
2001-09-04 22:17 ` Tester
2001-09-07 15:52 ` Linus Torvalds
2001-08-31 16:46 Bizzare crashes on IBM Thinkpad A22e Tester
2001-09-01 4:50 ` Bizzare crashes on IBM Thinkpad A22e.. yenta_socket related Olivier Crete
2001-09-01 6:17 ` Gerd Knorr
2001-09-01 10:08 ` Erik Mouw
2001-09-01 14:56 ` Linus Torvalds
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