OESF Portal | OESF Forum | OESF Wiki | LinuxPDA | #planetgemini chat on matrix.org | #gemini-pda chat on Freenode | #zaurus and #alarmz chat on Freenode | ELSI (coming soon) | Ibiblio


Welcome Guest ( Log In | Register )

> X.org Problems, Problems with Xournal after Upgrade to 2.6.26 Kernel
post Apr 7 2009, 03:12 AM
Post #1

Group: Members
Posts: 10
Joined: 31-October 08
Member No.: 23,292


I am using latest angstroem kernel 2.6.26 on my zaurus. After the upgrade to this kernel everything works as supposed, even better poverall performance. i was experimenting with window manager xfce, but didn't work out. now that i return to matchbox, actually setting everything back to matchbox i have a strange behaviour in xournal.

When trying to "write" or set marks to whatever the touchscreen seems to be really really sensible as it is almost unpossible to make a more or less good line. i have marks looking like a heartbeat in fact when trying to make a straight line?

does anyone have any idea where to begin searching for this thing? i liked xournal, but now its almost unusable as i can't write anything. when trying to write the marks get absolutely unreadable. besides of this all the otherthings are working fine...

kind regards,

Oliver Zieger
Go to the top of the page
+Quote Post
Start new topic
post Apr 7 2009, 03:40 AM
Post #2

Group: Members
Posts: 135
Joined: 27-June 05
From: Prague, Czech Republic, Europe
Member No.: 7,468

This is a problem of the kernel. According to the Cyril Hrubiš's blog and private talk, touch screen code in the kernel needs rewrite: Current implementation is polling based, but it should be interrupt based. To eliminate noise, reading of touchscreen should be synchronized with the LCD panel refresh.

As an ugly work-around you can use tslib filtering.

Note: Collie have had the same problem in past.
Go to the top of the page
+Quote Post

Posts in this topic

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:


RSS Lo-Fi Version Time is now: 23rd May 2018 - 09:08 AM