My laptop does have dual graphics cards, but I have already tried disabling the dedicated to see if anything changes without success. I only did this only about 20 minutes ago, but have not had an issue with mouse lag since. Windows Driver Foundation (WUDFHost.exe) appears to have something to do with this. CPU usage from it spikes when there is more going on such as video, cursor movement, or basically anything that is changing on the displays. I have tried disabling it in Services, but then the displays on the DisplayLink no longer work. Other devices continue to work without Windows Driver Foundation enabled, but the displays do not. I know how you feel because your tests pretty much mirror mine, and with the same results.
The kernel is a part of the of the operating system that has direct interactions with the physical structure of system. The device driver communicates with the computer system (i.e. your PC) through the computer bus which is used to connect the device with computer. When the device sends data back to the driver, the driver then can invoke routines in the original calling program. This call gets or sets the currently selected pointer device type.
Hopefully you can now use the official Lenovo Bluetooth keyboard & mouse on your Lenovo IdeaCentre B320 to login to Windows 10. But only if you download and unzip my BD90 device type modified inf files over the top of the existing ones in the release.
Stuart Tyrrell released his Serial Mouse driver as Public Domain in the archive that you can download below. You can right-click on an item in Device Manager to try Canon USB devices Drivers to get Windows to automatically find a driver, or install one manually. There are many utilities – mostly free – which claim to be able to backup and restore drivers, but when you come to use that backup you may well find that it doesn’t work.
The utility might not have backed up all the necessary files, and we’ve heard several reports of Windows throwing up errors such as “this driver is not digitally signed”. If you’re upgrading your hard drive to an SSD, or reinstalling Windows for some other reason, making a backup of your drivers could save you a lot of time. However, I am now unable to use the keyboard and mouse when in XP. Have plugged another mouse in but it won’t move either. In both setups there are monitors used in Extend mode, and the laptop display itself is set to Disconnected.
This is used to ensure that the correct pointer device driver responds to certain PointerV calls. The PS/2 serial device driver uses an asynchronous serial port. This driver only accepts data from mice communicating in a stream mode operating at 1200 baud. It does not support the higher baud rates that some mice allow you to select by sending them a command. The PS/2 serial mouse driver calls PointerV in a similar way to the Microsoft / Mouse Systems serial mouse driver; see The Microsoft / Mouse Systems serial mouse driver above. A quadrature mouse is connected to IOMD, which does not provide interrupt support for mouse input. Instead it provides two 16-bit registers which increment, decrement and wrap when the mouse is moved.
I am using a Plugable UD-3900 connected to a Dell XPS 9550. This problem is definitely driver and/or software (Windows + Updates) related.
The state of the mouse buttons is stored in a specific memory location. A further PointerV reason code of 1 can be used to enumerate the available pointer devices as text. This has been incorporated in the Configure application, so users can configure pointing devices from a menu. The keyboard handler can be replaced by a custom version if required . The keyboard firmware’s own auto-repeat capability is not used. Keys are instead repeated by the kernel – just as in earlier versions of RISC OS – hence keeping the same scheme for configuring auto-repeat delay and repeat rate. The standard quadrature mouse driver was also removed form the kernel and is now a separate driver, held in the ‘Mouse’ module.
Both those 8.0 drivers did behave identically regarding the lag so I won’t mention them separately in the following text. However there was noticeable lag at the beginning of mouse cursor movements (not all, just some, like in 20% of cases or so) and also similar lag on displaying the input from the keyboard. That was quite annoying so I tried to look for some possible solutions. The lag only applies to inputs using DisplayLink – I don’t have this issue with USB mice attached separately or my laptop’s native keyboard.
I’ve had no issues on Win7, though i did notice that the prolific cable can send a download quicker than the AXE027 but never tried both on vista or xp for speed. When the PC has restarted you should be able to use your USB keyboard and mouse to sign on again. Block drivers are drivers that refer to writing and reading of more than one character at a time. These drivers create blocks and retrieve as much information as the block can withstand. Device drivers operate within the kernel of the operating system.
It is now possible to use the Lightning VME keyboard driver . The mass storage driver transfer rates were increased by 200% for the (now 118 kb/s), 100% for the (Falcon, 300 kb/s) and 50% for the (450 kb/s). You won’t find a Print Scr button on a Mac keyboard, so if you want to capture what’s on your display then you’ll need to use the Windows Snipping Tool. To find this, open the Windows Start Menu and type snipping tool, then select it from the results that appear. For more details on how to use it, read Microsoft’s Use Snipping Tool to capture screenshots guide. To get the Windows version of Delete, press and hold the control or ctrl key and press D or hold the fn key down while pressing Delete.