Dear umesha, Right, so the root cause for the issue has been pinpointed. Believe it or not, people using atheros wi fi adapters are some of the most frequent complainants of such types of cases. Athero is cheaper than some of its major competitors, hence many companies are preferring their hardware in their machines.
The wiggly red lines that you are seeing are definetly because of the high latency that its experiencing. Technically, that means that the wi fi adapter is taking more resources than it should actually take. in regards of solutions, there does not seem a complete rectification of this problem, however driver update can be of some help. Try updating the drivers for your athero’s wi fi device and see if it makes a difference. As per my recent observation, athero has not been updating their drivers for windows xp and most of their latest drivers claims to work well with vista or windows 7. However, its worth keeping yours to the latest possible, of course the one that’s compatible with your operating system. If that doesn’t work, try reaching to lenovo technical support and telling them the problem. You basically have to inquire if its possible to change the hardware under your sales term. It has been seen that these companies have made their legal policies smart enough to save themselves from any possible hazard. Especially in the case of devices and their compatibility with various operating system. Someone on the thread has said that a dos based machine means that its compatible with any operating system, but I remind of a judgement given in united states sometime back where it was said that a dos based machine means that the company has not particularly tested the machine with different operating systems, hence it would not be responsible for any hardware compatibility issues. Legally, whole claim for the compatibility is being smartly averted to the device manufacturers. Though you’ve been condemning to use windows7, but I would still like to advice that please give it a try at least. Not just to get acquainted with it, but more importantly to find out the performance of your audio and wi fi devices with that and check if a driver update helps there instead. For your information, windows 7 has an xp mode, which pretty much brings your old days back. Also, there are other fantastic programs like classic shell etc which restores your xp experience to quite an extent. Like it or not, not all the latest devices have enough support available for windows xp now, and the reason behind this is Microsoft policies where they have deliberately promoted vista and windows7 over xp from past few years. It has been already announced that the support for windows xp would no longer be available after 2014, so I personally find this a wise decision to upgrade the OS, specially if its causing issues to make compatibility with latest hardware devices. Oh and some of you guys have written to me off the list to ask my contact number. Those would like to get in touch with me through phone would like to note, its: +91-9928341197. Hope this helps. Regards, Prateek agarwal. Managing Director, Daedal technovations pvt. Ltd. www.daedaltechnovations.com website: www.prateekagarwal.webs.com | www.prateekagarwal.tk On 11/24/11, Umesha S E <umesha....@gmail.com> wrote: > Dear Salman and others, > Sorry for the delay. Yesterday I was completely involved in testing > process. So could not reply. I could find the source of the problem. > Now we have to work out for the permanent solution. Following is the > result. But I din’t understand your previous message. 2 days ago, you > said that you bought your laptop only 3 days earlier. But in the last > message you said that you restored your machine to November 15th. How > is it possible? Is your system clock not correct? > > To prateek aggarwal, > Yes sir. It is due to Audio latency. I downloaded DPC Latency Checker > from the following link: > http://www.thesycon.de/deu/latency_check.shtml > When I first ran it on the system, I got all the red bars on the graph > even while there is no sound problem. The latency was varying for > every 2-3 seconds from about 2500 micro seconds to 12500 or 13500 > micro seconds. While the sound problem was present, the bars touched > the sealing of the chart. The latency was recorded in the range of > 150000 to 300000 micro seconds. Some times it even went up to 700000 > micro seconds. Surprisingly, even when I disabled my realtek > soundcard, I got the red bars of same height. Next I suspected network > cards. The moment I disabled my wifi card, it dropped to very low in > the green region (125 micro seconds). If I re-enable the wifi card, > the next second again I got the same red bars. One more thing I like > to tell you, if I enable wifi device and turn on it using the switch > provided on the laptop, it substantially drops but not to green > region. Then I get alternating 2-3 yellow bars (about 1200 micro > seconds) and 1 or 2 red bars (about 6300 micro seconds). The earlier > observations are when wifi is enabled but switch is off. I also ran my > computer for long time to find whether the problem appears after > disabling wifi and it ran without trouble for hours. So it is clear > that my atheros Wi-Fi card is causing it. Now please tell me sir, what > I have to do next for solving that wifi device problem. If you need, I > will provide the screen shots of the graphs obtained using DPC latency > checker. > Salman, as you know this problem does not occur continuously but it > comes and goes for some minutes. Hence I was testing it by running my > system for long time. So I could not reply in time. I did not install > SP3. But if you need it, its download page is > http://www.microsoft.com/download/en/confirmation.aspx?id=1260 > The following links may also be of some use. > http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=24 > http://support.microsoft.com/kb/936929 > > To shona man, > Out of curiosity, I want to know. Can we uninstall BIOS with system restore? > To Kiran Baug, > Do we have difference between Indian and US sites in terms of > downloads available for a model? > > Umesha > Search for old postings at: http://www.mail-archive.com/accessindia@accessindia.org.in/ To unsubscribe send a message to accessindia-requ...@accessindia.org.in with the subject unsubscribe. To change your subscription to digest mode or make any other changes, please visit the list home page at http://accessindia.org.in/mailman/listinfo/accessindia_accessindia.org.in
