The M6500 has two sets of mouse buttons, one set on the keyboard and one set on the trackpad. In one set, the left mouse button appears to be permanently clicked. How can I find out which set it is?
I have to attach a USB mouse to do any work. Both buttons work on the USB mouse. I can also use the trackpad to move the cursor, and click any right mouse button to bring up a right-button menu, but only the USB mouse's left button can click a menu entry.
Dell's online diagnostics test the USB mouse and report that the USB mouse is working. Well, I knew that.
If I bring up Dell's online diagnostics page, then disconnect the USB mouse, use the keyboard's tab key and arrow keys to navigate and space key on the page's clickable button to run the diagnostic, then the diagnostic doesn't detect any mouse at all. It should detect two mice and would be nice to tell me which one isn't working, but it doesn't detect any. After that failure, I can still press either button set's right button and bring up a context menu (back, select all, etc.) but have to reconnect the USB mouse and press the USB mouse's left button to dismiss the context menu.
The mouse driver's tray icon shows an animated picture of a trackpad and two buttons. The tray icon's left mouse button is permanently green, agreeing with other observations.
The BIOS is A10. The same problem occurs in the BIOS.
How can I find out which left mouse button is broken?