CF-19, mk5, Live Linux distro with touchscreen working out of the box?

New to me CF-19 Mk5 , CF-19AHUAG1M. Touch screen is erratic, want to rule out software issues. Is there a live Linux distro where the Touchscreen just works without messing around so I can verify?

Jon

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The cable connector in the lid should be looked at. Un-plug / re-plug and tape it down.
My MK6 (CF-191DC02FT) is running MX17 Horizon otb. (Multi-touch) It works OTB but I did add xinput and xinput calibrate for the touchscreen calibration. Digitizer is spot on.
What is your touchscreen setting in bios. I use auto.
Early MX-16 wanted a touchscreen bios....since changed so auto works. Sorry if this too much info.

 

I'll give the connector a try. I've replaced a touchscreen in a CF-19 Mk2 before, so I know what's involved. I found I have a Linux based recovery disk, and the touchscreen is erratic there also, so much so that I had to disable the touchscreen in the bios.
Bios is set on auto in Windows. I've tried the touchscreen setting also, but no difference.

Thanks.

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Somewhere in the MK19 series they changed the connector from the old style spring loaded to the brown flippy-clippy (tech speak) kind. Tape it down HARD.
I wonder what that cost Panasonic in warranty service?
FWIW I have one touch panel left for CF-19. If it's not a MK1 I doubt the panel is the problem though.

You can test the leads on the fpc? from the panel... Continuity between 1 and 3 and 2 and 4.

 

Ok, how do you properly release the brown clip? I fiddled with it for sometime, and never figured out how to release it. The cable is very tight in it.

I'm running Windows 7 and the self installing driver pack.

The screen reacts very weird. If I start the computer, and don't touch the mousepad, the screen senses the stylus or my finger, and follows it to a degree. But if I move off the screen, the cursor bounces back to about center screen left and right, and about 1/3 from the bottom of the screen. It always goes back to the same place, give or take a few mm. If I touch the touchpad, the touch screen no longer responds until I restart. Its almost like the computer senses that the touchscreen is acting up, and reverts to the touchpad only.

However, if I hit control- alt-delete, that screen reacts to touchscreen and the touchpad, and both are "locked" to the point on screen. If I use the keys to select a menu option, such as task manager, the computer goes back to only responding to the touchpad.

If I use a Linux distro, both the touchpad and touchscreen are "locked" to the point on screen. If I move the cursor and release it, it bounces back to that same location. The only way to use the Linux distro is to disable the touchscreen in the bios.

The built in tests in the bios says that the touchscreen is ok. The Fujitsu drivers for the touchscreen and pad show no errors.

If I use keys to get to calibration options, the Panasonic calibration says it's not fully functional, and exits. The Window calibration under tablet settings doesn't sense the touchscreen, either to ID the touchscreen, or to calibrate it.

My MK2 uses basically the same touchpad and screen and drivers, so I know how it should work. This MK5 has me baffled. It's like one place on the screen has a permanent touch. There is one scratch on the screen, but not where the cursor ends up. No other apparent damage, and nothing in between the touchscreen and the bezel.

Touchscreens are only about $45 out of China, so the cost doesn't worry me too much. But I'd like to rule out other faults.

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I'm guessing bad screen panel, cable is probably ok. I have a Mk2 here that can't be calibrated, guessing bad panel so it's stripped for parts for my Mk5.

 

Not so easy to replace and I've got them broken during delivery 2 times. But you'll have to try and finally this option works.

 

If there are no physical connection problems with the cables, go to your bios and see if GPS is enabled, if it is disable it. That will fix the problem if there is an on-board GPS unit, it is caused by a driver conflict with the serial port used by the on-board GPS unit. Panasonic released a fix for it but it a windows based driver, so it won't work for Linux.

 

Nope, symptoms of the dead panel.
GPS conflict looks like chaotic 1Hz jumps of cursor.

 

I stand corrected, I should have read the original post more carefully.

 

helpful videos.

 

I'll take a look. Dealt with a lot of flex connectors, but this one has me stumped. Thanks.

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Hey, first thing I thought of, but no standalone GPS on this MK5. Went thru it on my MK2. In any event, the self installing driver package installs the GPS registry patch. I even disabled the Gobi card in the bios because it includes it's own GPS, just in case.

Other than the touchscreen issue, this MK5 works great. Absolutely flies compared to my MK2. I specifically got the MK5 for it's Sata3 capability. The car diagnosis programs I use on it are disk intensive, especially during 20gb+ updates. Saves a lot of time.

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I think you may end up needing a new panel.

Meanwhile check around the edge of the touch PAD. Could you have some gravel in there?

Do you have a picture of the screen latch?

If Windows [calibrate] doesn't "see the TSPCB then resetting the registry won't help.

Yesterday I put a new panel in a CF-29. It was non-touch so I added a TSPCB. Put it together and nothing. The bios saw the TSPCB but nothing. Soooooo I put a different TSPCB in there and bingo. Apparently the bios sees the ground on the TSPCB and is happy.....sorta like the extra ground on a CF-29 GPS showing a GPS in bios......if that makes any sense.

Did you do a battery pull reset?

 

Yes, checked around the edges. Thought the bottom of the bezel might be bowed in slightly, but it wasn't the issue. Not touching the panel.

I took some pictures, but none show that connector clearly. It's reassembled now.

When you say battery pull reset, you mean the bios battery? I'm going to change out the wireless card anyway, so I'll pull it then.

Is the TSPCB the PCB the ribbon from the touchscreen is plugged into?

Both the bios and device manager see the touchscreen, and drivers show no issues. If I turn off the touchscreen in the bios, the two drivers for it in the Human Interface Devices entry in Device Manager disappear. Turn it back on, and they reappear.

Thanks for your help.

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I usually just pull all power and hold the switch on. Cmos battery is left plugged in.

On first boot after that set bios to defaults and save.

And yes the screen plugs into TSPCB. The manual calls it TS PCB.

Push on the brown slider to unlatch. The cable is taped with a black protective piece and probably a piece of Kapton tape under that.

This is NOT the latch I remember....maybe that's on earlier CF-19.

Images are from my MK6 dual touch.

 

My brown connector doesn't have the black part in your picture. It appears to be all one piece. The ribbon cable is thick in the area where it plugs in. I was able to pull it out and reinstall it without too much problem.

Battery pull and bias reset didn't fix it. Guess I'll order a new panel.

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The TS PCB that I was thinking of was on a MK2. On that unit the cable must be flipped. Typing on one now.

G'luck.

Jeff

 

Here's a picture of the touchscreen connector that appears to have no release. Tried pushing, pulling, lifting, etc. The cable is just stiff enough to push in and out.

Thanks to SHEEPMAN! for selling me the new touchscreen. Works great, and now it's fully functioning.

I did end up with these two small spacers(?) that fell out, and I have no clue where they go. Can anyone help?

Jon

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Are these the things that hold the pen tight in the lid ?? Is your pen loose when you put it in the slot in the lid ? On my phone now and can't really see the pic too good. Same thing happened too me on my MK3.

 

They could be, but the pen/stylus is tight in the side. Funny thing is that the first time I took the lid off, they didn't fall out. But that time I didn't remove the touchscreen from the bezel. Maybe spacers to locate the touchscreen in the bezel? If so, not obvious where they go.

 

Here's a picture with a scale for reference.

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looks like the spacers that go between the lcd and the bezel/frame.

 

I have the two at the top, and four on the sides of the lcd. These things are tiny, only about 1/16" thick.

Jon

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Do you have a parts manual?

 

Only for a K model, nothing there looks right. SHEEPMAN! got me the Touchscreen portion of the A model manual; it contains an exploded parts diagram, but no parts listing except for portions different from the dual touch. Its a little hard to tell what something is without a description. The dual touch manual was apparently too big to be sent by email. If you or he can post it someplace, I'd appreciate it.

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you have a pm

 

Thanks!!

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