| 2010-10-18 11:46:07 |
Duncan McGreggor |
description |
This issue was originally reported by Vincent Gerris (MacSlow) as part of bug #637106. We have moved it here, since it wasn't related to that particular ticket. Here are some comments from Vincent from that ticket which outline the issue:
Comment #6:
What happens is, that if I touch the screen, the cursor does not move from the previous position sometimes.
For example when I touch 6 different places on the screen, the cursor would follow 3 times and the other 3 not (it would remain at the 3rd position).
Things that effect this: when I press harder on the screen, sometimes the cursor does appear on that spot.
When I touch and then drag, the cursor always follows.
Please not that this does not happen on Ubuntu 10.04, so this is related to X/evdev.
Besides all this, I have PyMT om my device.
When that is configured to use the mtdev driver, the demo works fine for two fingers, meaning while X has trouble following, PyMT shows no trouble.
That would make me think it is not a driver issue, but that is just my point of view :).
The other thing is, when I use the driver that does not send the mtY and mtX (both) then this issue also does not occur.
So linking all that, I would think that when a touch is performed, some mechanism checks if both mtX and mtY are there and if so, tries to determine something about a simple touch that couses a different interpretaton to X then expected.
Comment #4:
My device is identified as a GeneralTouch Win7 TwoFinger device.
The hardware ID is 0dfc:0001 . I am using a driver developed by Stephane Chatty from enac.fr .
I am running Ubuntu 10.10 where I have this issue, but I have also a 10.04 install with the 2.3.35 kernel from 10.10 running with the same driver, and I do not have the issue there. |
This issue was originally reported by Vincent Gerris (MacRules) as part of bug #637106. We have moved it here, since it wasn't related to that particular ticket. Here are some comments from Vincent from that ticket which outline the issue:
Comment #6:
What happens is, that if I touch the screen, the cursor does not move from the previous position sometimes.
For example when I touch 6 different places on the screen, the cursor would follow 3 times and the other 3 not (it would remain at the 3rd position).
Things that effect this: when I press harder on the screen, sometimes the cursor does appear on that spot.
When I touch and then drag, the cursor always follows.
Please not that this does not happen on Ubuntu 10.04, so this is related to X/evdev.
Besides all this, I have PyMT om my device.
When that is configured to use the mtdev driver, the demo works fine for two fingers, meaning while X has trouble following, PyMT shows no trouble.
That would make me think it is not a driver issue, but that is just my point of view :).
The other thing is, when I use the driver that does not send the mtY and mtX (both) then this issue also does not occur.
So linking all that, I would think that when a touch is performed, some mechanism checks if both mtX and mtY are there and if so, tries to determine something about a simple touch that couses a different interpretaton to X then expected.
Comment #4:
My device is identified as a GeneralTouch Win7 TwoFinger device.
The hardware ID is 0dfc:0001 . I am using a driver developed by Stephane Chatty from enac.fr .
I am running Ubuntu 10.10 where I have this issue, but I have also a 10.04 install with the 2.3.35 kernel from 10.10 running with the same driver, and I do not have the issue there.
|
|
