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Search found 46 matches

by Thinkerer
Wed Dec 06, 2006 12:12 pm
Forum: ThinkPad Utility Work Area
Topic: T40/p-T43/p, R50/p & R52 Embedded Controller Internals
Replies: 90
Views: 180003

Re: The T43/p EC firmware typo - anyone try a "fixed&qu

Just bought a T43, and while the fan can be controlled, the pulse is driving me crazy and nothing can stop it (including fan control software). I wish Lenovo would fix that stupid bug/typo, I wonder why there hasn't been more of an outcry over it? Regards Did you try the Linux fan control script ( ...
by Thinkerer
Wed Nov 15, 2006 6:51 am
Forum: ThinkPad X20/X30/X40 Series incl. Tablets
Topic: Tablet handwriting density
Replies: 0
Views: 622

Tablet handwriting density

I'm considering getting an X41 Tablet (or the X60 Tablet), with two primary use being note-taking during lectures and detailed annotation of documents. The form factor and ability to enter free-form diagrams and math seems very attractive. However, I wonder about the following: How densely can you w...
by Thinkerer
Wed Oct 18, 2006 12:18 pm
Forum: ThinkPad R, A, G and Z Series
Topic: Exact temperature sensor locations for A31 series found
Replies: 8
Views: 7002

The RAM slot was closer on the bottom, so I was thinking it would be easiest to go there (e.g. machine a copper ram slot cover with ribs - dreaming of course, not happening any time soon), but not sure if that would actually work well enough since there's no airflow except passive. FWIW, the hot re...
by Thinkerer
Wed Oct 18, 2006 10:30 am
Forum: ThinkPad R, A, G and Z Series
Topic: Exact temperature sensor locations for A31 series found
Replies: 8
Views: 7002

A decent heatpipe to a little heatsink radiator that's part of the case might hopefully delocalize the heat enough to spread it so at least on low use the fan doesn't go on.. If you're OK with a low fan speed but don't want the fan to step up to loud levels, there's another approach: pipe the heat ...
by Thinkerer
Sun Oct 15, 2006 2:35 pm
Forum: ThinkPad Utility Work Area
Topic: T40/p-T43/p, R50/p & R52 Embedded Controller Internals
Replies: 90
Views: 180003

Re: T40/p-T43/p, R50/p & R52 Schematic Diagrams

Hey Milos, great work with these picture and sensor identification!

The A31 sensor mapping seems very different than the previously examined models. People using fan control tweaks need to take this into account.
by Thinkerer
Tue Sep 12, 2006 12:48 pm
Forum: ThinkPad Utility Work Area
Topic: T40/p-T43/p, R50/p & R52 Embedded Controller Internals
Replies: 90
Views: 180003

Re: T40/p-T43/p, R50/p & R52 Schematic Diagrams

To save you the check: the going eBay close price for (non-broken) system boards for these models is $230-$270. Ugh.
by Thinkerer
Sat Sep 02, 2006 3:09 pm
Forum: ThinkPad Utility Work Area
Topic: T40/p-T43/p, R50/p & R52 Embedded Controller Internals
Replies: 90
Views: 180003

Re: T43/p & R52 Embedded Controller Internals

The upload.sc download fails with ""Incorrect Link. You have clicked on invalid or expired link."
by Thinkerer
Fri Aug 04, 2006 11:18 am
Forum: ThinkPad Utility Work Area
Topic: T40/p-T43/p, R50/p & R52 Embedded Controller Internals
Replies: 90
Views: 180003

Re: Automated detection of number of temperature sensors

Does anyone have an idea of whether the EC firmware exports the number of thermal sensors, or any other information that would allow us to know for sure that the secondary set of thermal readings (EC dump offset 0xC0-0xC7) are valid? Do you know of any case where 0xC0-0xC7 don't return either valid...
by Thinkerer
Wed May 03, 2006 9:33 pm
Forum: ThinkPad Utility Work Area
Topic: T40/p-T43/p, R50/p & R52 Embedded Controller Internals
Replies: 90
Views: 180003

Re: T43/p Embedded Controller Internals

ThinkWiki page for this embedded controller (no new info yet...):

http://www.thinkwiki.org/wiki/Renesas_H8S/2161BV
by Thinkerer
Mon Mar 06, 2006 1:35 pm
Forum: ThinkPad Utility Work Area
Topic: T40/p-T43/p, R50/p & R52 Embedded Controller Internals
Replies: 90
Views: 180003

Re: T43/p Embedded Controller Internals

It now includes a quick-and-dirty cross-referenced HTML file Highly impressive! Did you do all of that by yourself especially for this project, or are there tools that help generate this? Can you figure out where the "disengaged mode" described at ThinkWiki fits in? Maybe it's what ec.s calls "fan ...
by Thinkerer
Sun Feb 26, 2006 7:24 pm
Forum: ThinkPad Utility Work Area
Topic: T40/p-T43/p, R50/p & R52 Embedded Controller Internals
Replies: 90
Views: 180003

Re: Fan 5 Second Pulsing

Note what sub_13b74 does: it alternates between jumping to two routines that load the values 5000 (loc_13b3c) and 30000 (sub_13b48), respectively. These seem to be the delay values in ms (what the above mentioned fix on 3.03 basically does is, instead of jumping from the switch table directly to lo...
by Thinkerer
Tue Feb 21, 2006 7:52 am
Forum: ThinkPad Utility Work Area
Topic: T40/p-T43/p, R50/p & R52 Embedded Controller Internals
Replies: 90
Views: 180003

Looks like this has already been done. Shmidoax's tool, and the script for Linux which inspired it, address only the first point above, and do it imperfectly - they don't change the EC firmware, but rather override it via software running on the CPU. This has many disadvantages (e.g., if your OS cr...
by Thinkerer
Tue Feb 21, 2006 3:49 am
Forum: ThinkPad Utility Work Area
Topic: T40/p-T43/p, R50/p & R52 Embedded Controller Internals
Replies: 90
Views: 180003

Impressive in the extreme. Amazing work! A few imagined uses: * Change the fan thresholds algorithm * Change the fan RPM values of (logical) fan levels * Change the fan control code to avoid the (noisy!) momentary fan acceleration that occurs whenever the fan speed is decreased . * Implement a accel...
by Thinkerer
Tue Jan 10, 2006 11:23 am
Forum: ThinkPad T40/T41/T42/T43 Series
Topic: The build quality of the left side of my T43
Replies: 36
Views: 7277

on my T43, the palmrest on top of the PCMCIA slot is a bit (but annoyingly) loose vertically. Fixed: I put a dab of (regular) hot glue into the space under the loose northwest corner of the palmrest, pressed down for a minute and peeled away the excess glue. The palmrest corner now stays attached t...
by Thinkerer
Wed Dec 28, 2005 6:58 am
Forum: ThinkPad T40/T41/T42/T43 Series
Topic: T43 electrical noise near Access IBM button
Replies: 15
Views: 3830

See here for discussion and suggested workarouns:

http://thinkwiki.org/wiki/Problem_with_ ... tch_noises

The workarounds are mostly Linux-specific, but some have analogs in Windows. For example, try undervolting with NHC.
by Thinkerer
Tue Dec 27, 2005 7:50 am
Forum: ThinkPad T40/T41/T42/T43 Series
Topic: Low capacity on brand new Slim-Li Battery? "drain"
Replies: 6
Views: 1718

tp_smapi

If you wish to control which battery is discharged first, it may be possible under Linux using the tp_smapi module:

http://thinkwiki.org/wiki/SMAPI_support_for_Linux

If this works, the functionality can also be ported to Windows.
by Thinkerer
Fri Dec 23, 2005 11:37 am
Forum: ThinkPad Utility Work Area
Topic: Thinkpad Fan Noise Problem: Light at the End of the Tunnel
Replies: 1168
Views: 1018778

The problem is, that IBM_ACPI eventually does a port io to do the same. The only difference is that unter Linux you can call ibm_acpi to do it in a synchronized way while under Windows I know no such way (and obviously Microsoft delveoper support doesn't know one either). The ibm_acpi Linux driver ...
by Thinkerer
Fri Dec 23, 2005 7:19 am
Forum: ThinkPad Utility Work Area
Topic: Thinkpad Fan Noise Problem: Light at the End of the Tunnel
Replies: 1168
Views: 1018778

Maybe it's possible to query the embedded controller through the Windows ACPI system, instead of via direct port access? That's what Linux's ibm_acpi driver does.
by Thinkerer
Thu Dec 15, 2005 4:12 am
Forum: ThinkPad T40/T41/T42/T43 Series
Topic: Problems with non-thinkpad option drives on T43 thinkpads
Replies: 631
Views: 551763

hdparm just couldn't get anything from the hard drive which is a problem because it means I can't turn on dma. Since dma can't be turned on I wonder if that is what they mean by slow transfers. Did hdparm and DMA work for you with the original ThinkPad disk? Are you using kernel 2.6.15 or the SATA ...
by Thinkerer
Mon Dec 12, 2005 1:44 am
Forum: ThinkPad T40/T41/T42/T43 Series
Topic: Weird Fan Noise from T43
Replies: 3
Views: 1449

Re: Weird Fan Noise from T43

I got this weird noise when it's running at a normal speed(By normal, I mean the fan is on most of the time, not running at full speed). Then every 8 secs or so, then suddenly the noise goes up loud for 1 secs then back to normal amount. Then the circle goes again. This is a common problem. See htt...
by Thinkerer
Sat Dec 10, 2005 4:44 pm
Forum: ThinkPad T40/T41/T42/T43 Series
Topic: The build quality of the left side of my T43
Replies: 36
Views: 7277

The one door/flap covering the PCMIA/ExpressCard Slot does not reach all the way to the top (2-3mm gap). Ventilation - the PCMCIA slot is a major air intake for the system fan (theoretically it would be partially by an Express Card, but since no one uses that...). But also on my T43, the palmrest o...
by Thinkerer
Fri Dec 02, 2005 9:09 pm
Forum: ThinkPad Utility Work Area
Topic: Shimodax fan control tool : sharing values
Replies: 87
Views: 101209

Lenovo Z60t CPU 45°C (0x78) APS 51°C (0x79) X7A 41°C (0x7a) GPU 0°C (0x7b) BAT 24°C (0x7c) BAT 23°C (0x7e) XC0 40°C (0xc0) XC1 43°C (0xc1) XC2 45°C (0xc2) I just installed v.15 and am ignoring everything except for the CPU. I'm going to lower the threshold to activate fan speed 1. I did find out th...
by Thinkerer
Fri Dec 02, 2005 8:49 pm
Forum: ThinkPad Utility Work Area
Topic: Thinkpad Fan Noise Problem: Light at the End of the Tunnel
Replies: 1168
Views: 1018778

I have a comment regarding the ignoring sensors issue. Some of the sensors can be ignored in regards to the fan operation. Case in point the battery temp sensors. The sensors are integrated into the battery packs so they are not indicative of the internal temp of the computer. Since the temps are i...
by Thinkerer
Fri Dec 02, 2005 7:27 pm
Forum: ThinkPad Utility Work Area
Topic: Thinkpad Fan Noise Problem: Light at the End of the Tunnel
Replies: 1168
Views: 1018778

Re: please, explain me as if i were 6

Smoke curling up from between the keys. You probably didn't mean this seriously, but in case anyone takes it otherwise: There will never be smoke curling up from between the keys, since the keyboard is airtight and spill-proof. The first physical indication of catastrophic failure is likely to be a...
by Thinkerer
Thu Dec 01, 2005 8:27 am
Forum: ThinkPad Utility Work Area
Topic: Shimodax fan control tool : sharing values
Replies: 87
Views: 101209

My guess is that the C2 would be rear/left [snip]. When turning on the utility showed C2 and BAT as the highest values, so technically it could also be the battery (BAT) sensor, although I'd expect that to be somewhere inside the battery. Makes sense. I'll check too on my next cycle. BTW, by "BAT",...
by Thinkerer
Wed Nov 30, 2005 9:39 am
Forum: ThinkPad Utility Work Area
Topic: Thinkpad Fan Noise Problem: Light at the End of the Tunnel
Replies: 1168
Views: 1018778

Re: Thanks!

Maybe there should be a configuration option to boost the audio volume depending on the fan speed... ;-) :idea: To the contrary - there should be an option to change the thresholds according to ambient noise (as measured by the built-in microphone and analyzed by your favorite psychoacoustic model)...
by Thinkerer
Wed Nov 30, 2005 3:32 am
Forum: ThinkPad Utility Work Area
Topic: Shimodax fan control tool : sharing values
Replies: 87
Views: 101209

Shimodax, 0xC2 indeed seems related to battery charging (I didn't notice that the EC update reset the charge thresholds so the EC started charging, and kept doing so when I booted to Linux...). When not charging, 0xC2 is still slightly higher than other components at idle with low fan, but nowhere c...
by Thinkerer
Tue Nov 29, 2005 11:45 am
Forum: ThinkPad Utility Work Area
Topic: Shimodax fan control tool : sharing values
Replies: 87
Views: 101209

Woa! It looks like the new BIOS+EC change the sensor readouts quite a bit on my T43: My CPU readouts are now 3-4 degrees lower than before (used to be slightly higher than GPU, now slightly lower), and Sensor 0xC2, which used to be quite cool, now reads a disturbing 51 in idle (everything else is un...
by Thinkerer
Tue Nov 29, 2005 10:11 am
Forum: ThinkPad T40/T41/T42/T43 Series
Topic: SATA Drive Upgrade For T4x series?
Replies: 7
Views: 2071

I'd love to know where the "special" comes from. Several people here report using other drives with APS enabled laptops with no problem. Sorry, I can't recall the ref, but I remember reading about IBM introducing some ATA command for the kind of head parking they needed. Maybe by now other manufact...

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