CF-19 Mk4 Audio Not Working - display/audio conflict?

Hi,

I have a Mk4 CF19 that was running Win 8, but now running W10 and have been struggling with getting the Audio working.

I couldn't get any sound out of it despite running the latest drivers, etc until something triggered a display driver error and then the sound came on.

The display driver is Driver Revision: 15.17.15.64.2281
The audio driver is the Conexant 4.115.0.60 driver.

There are a few threads around relating to problems with the graphics card, drivers and video drivers, but I haven't managed to get to the bottom of it yet.

Any suggestions on where I can get newer drivers to try?

Thanks

 

I wish I could help you but I will not be installing W10 on any of my Toughbooks until M$ changes there service agreement. You should read about W10 first...the pro's and cons.

 

Interesting, but the problem was actually there in Win 8.1.

The drivers are the same so I suspect that is what it relates to.

 

Did you hear about the display on the Dells and many other brands of laptops going out when they installed W10? After installing W10 the LCD would die as in you would need to replace them. This is no joke. Long time member Mr.Fox blew up 3 LCD until they found that it was the driver causing this to happen. There is a warning on NBR about this.

 

I won't install Win10 on anything again.
I had a beta version, but since then it has come out that Microsoft can set your computer any way THEY want. You can change the settings but THEY will change it back. Updates are FORCED on you..You have no choice.
Now it comes out that Microsoft scans YOUR files for anything it deems illegal or nefarious and rats you out. They also can SELL your information to anyone they want. I will pass on that....I will warn people about Win10. I won't install it..

 

Not heard that.

No problems so far, however as already stated the problem I am trying to resolve was there before Win 10 was installed so I suspect that is nothing to do with Win 10.

 

All great stuff, but nothing to do with the problem I am trying to resolve.


Anybody out there actually have something useful to contribute related to the problem I am trying to resolve?

 

What operating system did you start with?
What is the full model number?
What is the BIOS version.
Is the COA for Win7?
Is this 64bit or 32bit?
If it's 64bit, why do you need 64bit?
CF19's are a royal PITA to get drivers correctly installed.
Call Heartlands and spend $35 for the official recovery disk.
In 20 minutes you will have a fully working install of Windows.

Or install it yourself and spend days trying to sort it out.
If it did not work before the update it more than likely will not work in Win10.
Win8 and Win10 is unsupported by Panasonic and you will be on your own to figure out what drivers may work.
For better or worse, the diehards on this forum are not installing Win10 anytime soon.
You can PM member Barrmaley ......He has Win10 installed on a CF19...
http://forum.notebookreview.com/members/barrmaley.290780/


If I was installing Win10.
A).I would use the recovery disk for Win7.
B)Verify everything works..It will unless there is a hardware problem
C)Install Win10.....Panasonic does not offer drivers for a CF19mk4 even for Win8..Mk6 is the first mark to offer Win8 drivers.

Quick Google search gave me these results.

http://www.ibtimes.co.uk/windows-10-how-fix-sound-issues-after-upgrade-1513693

http://www.winbeta.org/news/how-to-fix-sound-and-playback-issues-on-windows-10

 

OK, very bizarre.

I have stripped off the video and audio drivers to run with the windows default drivers and no changes.

When rebooting the speakers come up as having been muted. Unmuting doesn't make any difference.

HOWEVER, if I shut the screen, let the computer sleep and then open the screen sound is restored.

There doesn't seem to be anything obvious in the event log so any ideas?

 

OK.

Laptop was rebuilt by a friend and started with Win 8.1
Model: CF-19RHR23PE
BIOS is V4.00L11
Running 64bit - no reason why we should/shouldn't be running it.

 

True but Panasonic has no drivers for W8.1 and 64bit makes it even harder. You might have better luck with 32bit...maybe.

 

+1 on the official Panasonic recovery disk. It's the best $35 you will spend

 

Sound and video issues could be the hotkey drivers or front button drivers.
On a CF19 the windows standard video driver will never work properly. On ANY version of windows.
It's all connected because when you rotate the screen to tablet mode, the video rotates direction too.
The drivers need to be from Panasonic and installed in perfect order. Otherwise you will have trouble.

There are NO win8 drivers for your mk4. CF19 drivers are very specialized. Generic drivers cause issues.
The 64bit drivers, if Panasonic offers them, are problematic.

We have done this before. We discuss this with newcomers all the time.
They all end up doing one of two things .
One is they trust our advice and install Win7 using the recovery dvd. The end result is a rock solid OS that is fully supported by Panasonic.
Two is they go ahead and install Win8 or Win10. After days or weeks or work and frustration, they give up and use the OS as it is. Not fully working.
Without a fully supported OS, you will not get all of the issues worked out. Usually they give up on the front buttons and any screen rotation.
Without the front buttons and hotkeys working properly, the sound can be turned down at the BIOS level. Reboots or hibernation will sometimes restore it.

I don't feel that you really want to hear what we are telling you so I will not bother anymore.
I truly wish you the best of luck with your CF19 and win10...

 

Forgot about those.

OK. Not noticed many problems with generic drivers, but haven't been doing much rotating.

I realise that so have gone back to the latest factory Win7 drivers and the screen rotates fine and hotkeys work fine.

I questioned the drivers in the hope that there may have been a quick fix like Panasonic drivers for a newer model.

Yes, noticed the lack of Win 8/10 drivers, but not noticed any earth shattering problems yet with the updated Win7 ones.

Yes, going back to a base install is always a good starting point, I was just hoping that the sound problem was a common one that could be fixed in an easier way like a specific driver combination, reg hack etc.

I've been playing with Panasonics for several years and hardware for many years more so well used to the Panasonic peculiarities, being a techie I prefer to know why a problem is occurring and then look for a way to fix it rather than just going back to a base build and not trying to push the boundaries.

OK, the machine came with Win 8 on it from a friend who rebuilds and sells them. I understood he had started from a Win7 base, but may not have.

At this stage the only thing I find that isn't working is the sound, everything else is fine so no major frustration here.

Happy to listen as long as it isn't a lecture on the evils of Win10

As I say Win10 seems to be working fine except for the sound - we only use the machine for diagnostics and casual browsing/email so the lack of sound isn't a major issue.

If it was a case of installing a specific driver or a registry hack then it would be worth doing, but at this stage I'm not in a rush to going back to Win7 yet - I want to evaluate Win10 a bit longer.

As for Win10, not sure I'm convinced. I hated Win 8 which seemed to have leant far too much towards reliance on touch screens, so a pain to use on the average desktop, and Win 10 seems to have improved on that, but I do miss my standard Win 7 start menu.

 

Yes. Search for "no sound" problems, permanent mute in cf-19. This question appears here too often and the solution is very simple. It's a hotkeys problem.

 

Same here and if I am right you get W7 32bit and W7 64bit on the same disk.

 

Yes, I had done the search and seen some of the other posts, but I'm not convinced that it is a Hot Key issue on my machine.

The Hot Keys work fine on my machine despite having swapped and changed video and audio drivers so I'm not that keen to start messing with them.

After a restart the audio is muted and un-muting it using the hot keys has no effect.

If I then shut the lid for thirty seconds or so, long enough for it to sleep, I open it up and sound is all working fine.

If I then re-start the machine completely it then reverts back to the sound being muted.

So, my theory is that it is down to an initialisation issue - something is causing sound to be muted by default so it never properly initialises - unmuting it and then re-initialising it when coming out of sleep solves the problem.

If I can find where the sound is set as muted on a restart I might be able to fix it.

I'll keep using search, but haven't found anything about it yet.

 

-1 on spending $35.
It's +4GB of RAM