14 of 14 people found the following review helpful
Problems with wi fi card,
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This review is from: Samsung Series 9 NP900X3C 13.3 inch Ultrabook (Intel Core i5 3317UM 1.7GHz, 4Gb RAM, 128Gb SSD, LAN, WLAN, BT, Webcam, Integrated Graphics, Windows 7 Home Premium 64-bit) (Personal Computers)
Having owned the one year old Samsung 900X3A I upgraded to this model. There are some significant improvements mainly in the display and graphics card. The colours look a lot brighter and more accurate. The resolution has been increased to 1600 x 900, meaning you need good eyes or reading glasses. The processor is faster. The matt non-reflective screen is superb. The X3C is also slightly smaller (but with the same screen size) and even lighter than the X3A.
Appearance wise the interior and exterior are now entirely a matt powdered-grey finish, far more elegant than the X3A.
However I am having trouble with the wi-fi card (Intel centrino 6235) which is a new card compared to the Broadcom card on the 900X3A. I find it does not hold the wi-fi connection when connected to some 'n' routers when configured on the 'dual channel' setting (i.e. 20/40 MHz) at 300 mbs. The connection drops after just a few minutes.
But, curiously, it does work on dual channel with some routers.
It does work consistently when it (or the dual channel router) is configured to single channel (i.e. 20 MHz) at 144mbs.
Samsung tech support are currently not able to address this issue. So, for now I am using it set on 'single' channel until a solution is forthcoming.
I'd like to know if other owners of this product have experienced this issue, although if you have either the notebook's wifi card or the router configured to single channel you wouldn't know there was an issue.
Were it not for this I would give it 5 stars, and may yet if the wi-fi card issue is resolved.
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Showing 1-4 of 4 posts in this discussion
Initial post: 9 Oct 2012, 20:18:21 BST
Thornhill P says:
I had a similar problem with an early X3A. I returned it for another identical unit which seemed a bit better (but not much). A google search finally solved the problem. In the advanced power settings you can specify the power allocated to the WiFi antenna. I turned mine up to max and haven't had an issue since. There has been no appreciable loss in battery life either.
In reply to an earlier post on 13 Oct 2012, 22:14:58 BST
Last edited by the author on 17 Oct 2012, 18:15:29 BST
It's not the strength of the wi-fi signal that is at issue. Rather a fundamental firmware glitch (incompatibility) with some routers re the dual channel setting at 300 Mbs.
My X3A does work fine on dual channel. It's the X3C that sometimes gives problems.
That said the X3C is more sensitive in receiving wi-fi signals.
In reply to an earlier post on 17 Oct 2012, 21:35:37 BST
E. J. H. Chiu says:
Hey, I think my gf's Series 9 X3C has a similar problem as well.. The router's a O2 Wireless Box V.. Often there are times that when the computer wakes up from sleep the wifi would stop working, the only solution would be to reset the router. Did u find any solutions for urs?
In reply to an earlier post on 19 Oct 2012, 06:21:11 BST
Last edited by the author on 22 Oct 2012, 12:54:16 BST
I'm relieved I'm not the only one who has noticed this issue.
The curious thing is that after turning the NP900X3C on the wi-fi works for about 5-10 minutes (on dual channel). Then the wi-fi signal drops and you have to turn the computer (dual channel setting) off for about 20-25 minutes in order to allow the router to 'reset' itself.
The only solution seems to be to set the wi-fi to 20 MHz (either via the router setings or the w-fi card settings), in which case you cannot get the benefit of 300 mbs wi-fi speed or dual channel.
However I have observed it does work (on dual channel) with some routers.
I still have no idea how to resolve the issue.
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