Stefan Doehla wrote: > > As nobody answered I'll answer: > > I wrote: > > > Is it a general problem to use X 4.x.x together with RTLinux? > > I saw there was some discussion about the accelerated drivers some time > > ago. > > I decided: YES, it is (but what in some years when X3.3.x died)! > > > > My problem: > > > > If I start RTLinux from X (xterm) and my module everything is okay > > (except some jitter - that's maybe from direct irq handling of X - as > > the discussion showed ...). > > okay, it's maybe the pci_retry function that's part of the PCI2.1 spec. > Can one disable this feature? I heard it's only implemented in > Intel440BX and later chipsets ... > > > > > When the whole thing runs and I shutdown X -> the machine hangs (also my > > rtl-module) -> reset -> fsck -> some files are lost -> ... > > > > I'm now using XFree 3.3.6 (recent Debian packages and a old Redhat 6.2). > I have definetely less jitter than before. But still, when I do some > crazy things with my windows -> jitter (not with Redhat). > A X4.x.x without hardware acceleration will cause more jitter. > > Letting X crash (or whatever) doesn't do any harm now to RT (except some > jitter with the Debian version). > > A good test for the realtime capability is the resizing of the search > panel in mozilla ... > > Funny is that a 2.2.19 RTL3.1 kernel will reduce the jitter. 2.4.4 > RTL3.1 will give me more jitter. > And a SMP kernel will give me even more jitter. > > All together means: > Any new Linux program (X, kernel, ...) and a video card with the > pci_retry feature can't provide me realtime. > > Redhat6.2 with RTL3, 2.2.18 seems to be 'realtime' (but it crashes once > in a while and is a old uniprocessor configuration (on a SMP box) ...) > > If anyone has a comment to one or all these results: post it ... > Stefan
I'm experiencing a similar problem with 3.1/2.4.4. My keyboard and mouse are dead when I exit an X session (kwm) and return to the login screen (kdm). When I do a remote login and kill X, sometimes things work again. Sometimes unplugging kb+ms (and plugging back in of course) helps. And sometimes nothing helps; and I have to type "reboot" to make the machine at least go out clean. I use XFree86 4.1.0, nvidia server. I haven't had the time to do some real testing. I simply replaced the machine by another with an older configuration that worked (3.1/2.1.18, don't know which X server). Theo > > b.t.w.: posting is now faster: 9 hours ... > > -- [rtl] --- > To unsubscribe: > echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR > echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] > -- > For more information on Real-Time Linux see: > http://www.rtlinux.org/ -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] -- For more information on Real-Time Linux see: http://www.rtlinux.org/
