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geekhack Community => Keyboards => Topic started by: Paul Dietz on Sun, 20 March 2011, 16:41:06

Title: Windows 7, SP1 fixes 12+ key issue...
Post by: Paul Dietz on Sun, 20 March 2011, 16:41:06
As some of you may be aware, there was a nasty bug in Windows that, in some cases, could generate incorrect key press events if a large number (12 or more) keys were pressed simultaneously via USB keyboards. One of the very few keyboards capable of reporting enough keys to tickle this bug is the Sidewinder X4. I am very pleased to report that this bug appears to be fixed in Windows 7, Service Pack 1, which is available via Windows Update.

With SP1, you should be able to take full advantage of the capabilities of X4 which are explained here:

http://www.microsoft.com/appliedsciences/content/projects/SideWinderX4.aspx (http://www.microsoft.com/appliedsciences/content/projects/SideWinderX4.aspx)

Enjoy!
Title: Windows 7, SP1 fixes 12+ key issue...
Post by: Evil_Spork on Sun, 20 March 2011, 17:12:06
Sweet! Now I can smash my face on my Choc Mini and he sure that every cheek and nose crunched key will register!
Title: Windows 7, SP1 fixes 12+ key issue...
Post by: JBert on Sun, 20 March 2011, 17:15:05
You never know which game designer needed a "keyboard upside down" key event...

Now seriously, it is good to hear this got fixed.
Title: Windows 7, SP1 fixes 12+ key issue...
Post by: Soarer on Sun, 20 March 2011, 17:31:22
Thanks Paul, for letting us know!

I never did work out exactly how many keys were needed to find the bug, it was possibly only 8 or 9 with the standard 6 key + modifier style report. But it was definately related to reports where some keys were reported as bits (e.g. modifiers) AND some keys reported as bytes (e.g. other keys). My firmware, which reports all keys as bits, didn't find the bug, but it's still nice to have it fixed :-)

Any chance of a patch for XP? :-p
Title: Windows 7, SP1 fixes 12+ key issue...
Post by: hasu on Sat, 26 March 2011, 09:42:06
I confirmed that my Windows 7 SP1 fixes the bug. Nice!
As Soarer said, this bug could be seen even with normal 6KRO keyboard.

Title: Windows 7, SP1 fixes 12+ key issue...
Post by: Tony on Sun, 27 March 2011, 05:43:46
12 keys? With ten fingers I rarely press so many keys at once. Good news anyway.