Monday, December 26, 2005
Does the screen of your Palm makes a noise like a buzz?
For a couple years, for design changes, that is the case that some units of Palm may begin to emit a small high-frequency noise last time. Depending on the user and the unit specifically, it will be noticed or not. In some cases it can become annoying.
The cause appears to be the plastic layer that coats the screen of your PDA. When it is switched on the deck vibrates a few micrometers, which produces a noise at about 16Khz, audible to the human ear. That exlica why, if we support the stylus in it, the noise seems to disappear. Some users have sent a letter to Palm asking for an explanation, but this noise is considered normal and not a manufacturing defect:
The high pitcher sound comes from electronics inside the palm. It's like a computer, they are never totally quiet. These new models have a bigger CPU and more advanced technique. With this comes a backside, that is the fact that the palm is no longer totally quiet as the V older models were. The reason we ask for a hard reset is less because the applications you have installed the less noise will make the palm. The more applications there are installed the more the processor needs to work and thus higher the sound. This is not considered a manufacturing defect and the unit will therefore not be Repaired or Putt since newer models have all this noise.
[...]
Thank you for contacting palmOne.
Kind regards,
Patrik
PalmOne Technical Support
But this problem has a solution. It has been discovered that varying the speed of the data bus of our Palm, stop this noise emitted. Therefore, what we need is a program that allows us to vary the speed of the components of the PDA.
Before continuing I want to make clear that our PDA operating at a speed which was not designed is not something that should be done if we do not know what we bring minimally hand. In case of excessive force, we may end up with a posapapeles very expensive.
The program will use a processor that takes our Palm. In my case (Tungsten E2), it is an Intel Xcale running at 200 MHz. This information can find in the documentation of your PDA, the manufacturer's page, or using a diagnostic tool as sysinfo.
Sysinfo provides us with detailed information on our PDA
For Intel Xcale I found two programs that have helped me to eliminate the aforementioned buzz of the screen:
- WarpSpeed in the latest version, and directly brings an option to eliminate the noise of which we speak, without even having to play with the speed of the bus. And it works with other processors, not just with the Xcale, so it will be useful to many more people.
- PXA Clock also has used me to close the gap. There is no specific option, but playing with the values you get the same result. Originally set to values:
but changing a few parameters, I was able to follow the processor running at 200MHz, but with a bus of 66MHz, thereby adjusting to the changes, the little buzz disappeared instantly:Mem: 100MHz, Bus: 100MHz, Sys: Mem * 2 (100x2 = 200MHz), Turbo: disabled
Nor are we anything if we choose other options that result in such a CPU to 233MHz. The battery will last a bit less, but at recent games better function. That falls within the overclocking and is personal to each.Mem: 133MHz, Bus: 66MHz, Sys: Mem (133x1 = 133MHz), Turbo: Sysx1.5
The configuration of PXA Clock that solved the problem
So as we have seen, the hum of the screen is not something we can not fight. I believe that this advice will help a lot of people, which searches the Internet for quite some time, as I have. For any suggestion or correction, as always, the comments you have available.
By: Mark Gonzalez Troyes in Palm Tricks
RSS comments | 
Print this post
Related Articles
Subscribe to stay abreast of developments in this blog
Hey, I've been testing both programs and I can not eliminate the hum from my Palm TX, it is true that mild, as I close the screen to the ear to less than 4 fingers, but however much I use the instructions in this tutorial, the non ruidito eliminate achievement.
Any advice for the TX? Maybe not yet updated the program for the TX?
Thank you
According to read the page PXAClocker:
"The list of supported devices includes Sony Clie, PalmOne Zire 72, Zire 31, Tungsten C, T3, T5, E2 and LifeDrive devices."
So it could be that the T | X is not supported. Regarding the Warpspeed, in the list of devices supported by Warpspeed not yet shown the T | X.
If you like to comment on the current version of these programs does not work on the T | X, will soon get an update on devices, as happened with each release of Palm.
There is another programilla called Lightspeed that the truth obliges me to have to do a hard reset ... in this beta version, and for some reason to regret that I said that was consistent lock my PDA ...
Ooops forget to say it is a T3 OWNED ... ...
Yes, there are more programs for overclocking. I spoke only to prove that I could with my E2, because each program is specific to each processor.
In the future I will make a compilation of all the programs. A greeting and thanks for the comments
Hi Mark,
The drone of my screen is so unbearable that I can not be more than 5 mins with the palm turned on. You could tell me where to get the Warp Speed and what is the latest version. Is this a payment program?
Mil gracias.
Hello IROS.
Yes, unfortunately both the Warpspeed as PXAClocker for purchase. Although the author of PXAClocker always leaves the penultimate version for free, under the name Lite, so you can prove it works and if you spend money you avoid.
PXAClocker:
http://www.vistabug.com/pxaclocker/download.html
WarpSpeed:
http://www.palmpowerups.com/modules.php?name=Content&pa=showpage&pid=3
Well, see, I tried to warpSpeed of Dmitry on my T | E2, and it brings an option to remove the buzz in the preferences: worked much better than PXAclocker settings, and without playing with the bus or the cpu. Moreover, as I use TCPMP to view some videos, and overclocked as it locks up a bit, but by adjusting the preferences of that program only for a bus of 300MHz and 300MHz of a cpu, now you can use perfectly. Well that was worth the 10 dollars that I paid!
A doubt Marcos:
)
Clock settings PXA your samples here in any way diminish the performance of the T | E2 (speed / duration of drums / file transfer)? I use the PXA Clock lite to read some very large and PDF viewer for the palm "Media", which is in the Top 5 of the slowest
THANKS!
PS: Advertising, Random know a pretty good display of images and free? (I use a VFSi is called, is good, but sometimes blocks the palm of a strange way, the screen begins to fade ... I am afraid
I've been using the PXAClocker few months with this configuration, and performance has been the same. Curiously, the bus to 66MHz has not influenced anything. But to verify it scientifically, it's easy to spend any free application of benchmarking, as Speedy.
You're right, the photo viewer is slow, and with the DbCacheTool running in the background even more. But do not look nearly as ever photos in the Palm, I have not sought alternative. Although I've found that the curiously TCPMP can open images. Apuntaré it as a topic for another post to investigate