Re: [Xpert]i810, XFree86: vertical bars on screen
> Stuart, > This is a watermark issue. The watermark is the set of delays etc. > that control the flow of data into and out of a FIFO that feeds the > dac. Your FIFO is probably running out of data when memory bandwidth > isn't available to fill the screen and blit at the same time. Hmm. Especially considering that I'm running an i810 (*spit*), this could very well be the issue. *starts browsing the Green Guide for a new Matrox* :) > Your video mode is probably to blame. Either run at a lower refresh > rate, Eeew. 75 Hz (the current refresh rate), for me, is the bare minimum for a reasonable display; I'd actually prefer to be playing at 85 Hz. Anything less, and I can pick up on the flicker. > or a smaller resolution. That's even worse. :-) On a 19" screen, 1024x768 (the next resolution down) isn't what I'd call fun. And to think that I've been intending to bump the resolution *up*... :) > Additionally there were some systems > that had a incorrect bios setting in the MEMMODE register. This was > fixed in XFree sometime recently but I don't recall when. If your > system suffers from that issue upgrading to 4.2.0 may provide better > results. I'll look into that, then. > Additionally if you are using a non standard Modeline in XF86Config... > don't do that. It looks like I'm using the default modes, rather than a user-supplied mode. Thanks to all who responded.. food for thought. ___ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
RE: [Xpert]i810, XFree86: vertical bars on screen
Stuart, This is a watermark issue. The watermark is the set of delays etc. that control the flow of data into and out of a FIFO that feeds the dac. Your FIFO is probably running out of data when memory bandwidth isn't available to fill the screen and blit at the same time. Your video mode is probably to blame. Either run at a lower refresh rate, or a smaller resolution. Additionally there were some systems that had a incorrect bios setting in the MEMMODE register. This was fixed in XFree sometime recently but I don't recall when. If your system suffers from that issue upgrading to 4.2.0 may provide better results. Additionally if you are using a non standard Modeline in XF86Config... don't do that. -Matt -Original Message- From: Stuart Lamble [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 8:27 PM To: [EMAIL PROTECTED] Subject: [Xpert]i810, XFree86: vertical bars on screen Greetings. I am currently running XFree86 4.1.0 on Linux 2.4.17 (Debian unstable). My system is based around the Intel 815 chipset (Pentium 3, 933 MHz). Afterstep window manager, with a 16 bit color depth. Every so often, I get vertical bars appearing on my screen when I move a window around. These bars are 12 pixels wide, and tend to be separated by 116 pixels (hmm. Interesting figures...) Depending on where the window being moved is, the location at which the bars appear may move across 64 pixels. (Sorry, I can't tell you the offset from the side of the screen. Oops.) The bars do *not* appear automagically -- they appear only when I move a window around on screen (or move to a different part of the virtual screen provided by AfterStep) -- and not even all the time then. It *seems* to be related to having a large number of gtk-based windows open, but I can't swear to that; I can't reliably reproduce the problem. :-( Does anybody have any suggestions? Or am I going to end up spending a couple of hundred (Australian) dollars on a new (better :) video card? Oh, and a final note: I'm aware that XFree 4.2.0 is out. I'd prefer not to have to download and install the binaries myself -- I'd prefer to stick with the Debian package system. If, however, it can be stated with certainty that this problem is resolved in 4.2, I'll look into it. (There doesn't *seem* to be anything in the changelog, though.) Thanks, Stuart. ___ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert ___ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
[Xpert]i810, XFree86: vertical bars on screen
Greetings. I am currently running XFree86 4.1.0 on Linux 2.4.17 (Debian unstable). My system is based around the Intel 815 chipset (Pentium 3, 933 MHz). Afterstep window manager, with a 16 bit color depth. Every so often, I get vertical bars appearing on my screen when I move a window around. These bars are 12 pixels wide, and tend to be separated by 116 pixels (hmm. Interesting figures...) Depending on where the window being moved is, the location at which the bars appear may move across 64 pixels. (Sorry, I can't tell you the offset from the side of the screen. Oops.) The bars do *not* appear automagically -- they appear only when I move a window around on screen (or move to a different part of the virtual screen provided by AfterStep) -- and not even all the time then. It *seems* to be related to having a large number of gtk-based windows open, but I can't swear to that; I can't reliably reproduce the problem. :-( Does anybody have any suggestions? Or am I going to end up spending a couple of hundred (Australian) dollars on a new (better :) video card? Oh, and a final note: I'm aware that XFree 4.2.0 is out. I'd prefer not to have to download and install the binaries myself -- I'd prefer to stick with the Debian package system. If, however, it can be stated with certainty that this problem is resolved in 4.2, I'll look into it. (There doesn't *seem* to be anything in the changelog, though.) Thanks, Stuart. ___ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
