mojira.dev
MC-54194

Key press of simultanously pressed keys not recognized

Moderator note

Not a Minecraft bug, this is a hardware issue.

Keyboards cannot necessarily record 3 random pressed keys at once, especially Laptop / Notebook / Wireless Keyboards have different keyboard matrix / CPUs compared to desktop keyboards.

There is nothing you can do to solve this except for switching to another keyboard that doesn't have this issue.

Cannot move left while holding the TAB and LSHIFT keys at the same time.
This occurs in all recent versions of the game (1.7.X, Snapshots)
Java 7 on Windows 8.1.

Related issues

MC-6406 Cant jump / Cannot press multiple keys on the keyboard at one time MC-11456 When holding down W & A at the same time you can't attack MC-18629 can't press 3 buttons at a time MC-26877 Movement bug: Cant use more then one key at once MC-30716 Jumping and pressing 6 without use MC-54495 Can't Use Numbers 1 & 2 To Switch Selected Slot While Waling And Tabbing MC-57718 Cant open inventory when pressing certain keys MC-58314 Cannot jump while holding strg + w + tab / Unable to recognize simultaneously pressed keys MC-59513 TAB while holding CTRL prevents jumping. MC-61621 Can't walk left when holding tab. MC-62472 Sprint Key Stops Jumping MC-64856 Unable to sneak along a front-left diagonal MC-65340 Holding sprint + viewing tab doesn't allow you to jump. MC-68485 Unable to jump while holding sprint key at the same time MC-70674 Pressing "Tab" and "Shift" at the same time doesn't allow usage of "a" key. MC-71556 moving glitch MC-72073 Backwards walking diagonally only works to the left MC-74535 If you press q and w and than "list player" you can´t use some outher button MC-76837 Inventory slot 6 is underpowered MC-77289 No jump while pressing D and sneak MC-81675 I can't sprint on right MC-88218 Cant Move MC-88518 you can use thrid person veiw [F5] while using the sprint key l ctrl but not when double tapping forward [w] MC-94873 Moving diagonally Backwards and Left doesn't work while sneaking MC-94901 Cannot toggle Third Person View while riding a boat MC-96015 F3 doesn't work in boats MC-96127 Keys are stuck in game. MC-96410 sneaking backwards makes you unable to select slot 8 MC-99425 can't jump when your sprinting MC-100276 Debug screen with profiler graph makes unable to move forward nor left MC-101429 Issue switching slots MC-111141 The hotkey for slot 4 doesn't work when sprint jumping MC-111177 Helpe-me MC-112144 When I press "Forward" the character gets stuck on autorun. MC-112283 Pressing tab and control at the same time won't show the player list MC-112596 Sneaking and Sprinting, when set to Control or Shift, doesn't stop when button is released, but does stop when inventory or chat is opened. This only happens on servers. MC-121306 Pressing Jump, Walk Forwards and Sprint at at the same time ignores Walk Forwards key MC-131693 Alt key cannot be used in conjuction with A key MC-131855 w + sprint + jump makes u stand still after jump MC-150091 If you press shift + tab + a to walk you cant move to the left MC-150763 TAB + Shift + A doesn't make the player sneak left MC-152666 Crouching & Moving MC-160409 No walking when pressing space between ctrl and w MC-164658 Input problem MC-183251 Pressing A while holding Tab and Shift doesn't make you go sideways MC-195292 Can't use F5 key while holding W and Ctrl or W and Space MC-206864 Motion error MC-212753 Left Movement Bug (Shift + Tab + A) MC-214511 can't move MC-214717 Can’t move backwards whilst jumping and sneaking at the same time. MC-222210 While sprinting some hotbars can't be selected via the numbers MC-224091 Can't press "2" while holding shift. MC-237186 Can't save a hotbar, even though keys are bound MC-258462 when holding down the r key to sprint I can not switch to my first hotbar slot. MC-260139 4 Slot bug MC-263132 Controls MC-263592 Sprinting MC-263730 Unable to jump while sprinting with control key MC-263860 Cannot switch to new item in hotbar while crouching MC-265192 Multiple Key Presses Not Working MC-267756 cant switch to hotbar slot MC-276166 Pressing the forward and backward buttons simultaneously while squatting causes incorrect behavior in the game

Comments

migrated

Cannot reproduce.

kumasasa

Incomplete without further details, e.g OS, Java version.

migrated

Confirmed for me in 14w18a, but shift+any arrow doesn't work for me AT ALL, due no doubt to the fact that I use the keypad arrows to move. I never noticed before because I use the keypad for crouch, and every other button too (isn't that the point of gaming with the keypad arrows? enough buttons beside the arrows to handle everything?)

So doing a PROPER playtest (setting the movement and crouch to defaults): cannot reproduce. But for anyone using the keypad for movement there's a bug there.

migrated

I misstyped when I made the post, it's TAB not ALT, sorry.

migrated

Ah ok, retesting...

Confirmed in 14w18a (yes with default controls). Why only left is affected but not the other 3 directions is beyond me.

migrated

Yeah I don't get that either.

kumasasa

Not a Minecraft bug, this is a hardware issue.

Keyboards cannot necessarily record 3 random pressed keys at once, especially Laptop / Notebook / Wireless Keyboards have different keyboard matrix / CPUs compared to desktop keyboards.

I have a "normal" 104 key keyboard and any combination of three keys out of TAB/LSHIFT/CTRL plus movement keys is working here fine on Windows 7.

migrated

honestly I'm a bit sure that this is an issue with minecraft's recieving of inputs, because this is an issue for me as well

migrated

(Unassigned)

Unconfirmed

Minecraft 14w11b, Minecraft 1.7.9, Minecraft 14w18a

Retrieved