> "K. Petersen" wrote: > > > > I have come upon a reproducible lockup on my system when switching from a > > console virtual terminal to X. It can be produced as follows: > > > > Begin X > > Switch back to a virtual console > > Switch back to X
"Me Too" I'd like to report that I can reproduce these symptoms on my 760MP system as well. It is indeed 100% reproducible, the X server dies as it restores the screen after a vt switch back into X. Generally it partially draws the screen, and then goes into an infinite loop writing "Idle timed out, resetting engine..." into the error log (and locking up the console in the process). The problem seems to be independent of the driver version: I've tried various DRM/XFree86 trees including 4.1.0 and 4.2.0 releases, DRI CVS, GATOS versions, and vendor packaged versions. I've speculated that this problem was a timing bug described by ESR on his webpage: | the ATI Radeon support in XFree86 4.0.1, it turns out, doesn't play | nice with the S2462 chipset. If you enable the Radeon's acceleration, it | will throw complete garbage on an X dispay. | It developed that there's a known timing problem in the Radeon driver, | which the extreme speed of the Athlons exacerbates; Darryl found us a | one-line patch, which worked. The one line patch in question adds a 100ms delay in the XFree86 driver at the point where it restores the screen after a vt switch: (patch at the bottom of the page). http://www.tuxedo.org/~esr/writings/ultimate-linux-box/configuration.html But this "fix" (or even adding a larger udelay) didn't solve the problem in my case (perhaps this shouldn't be surprising since ESR was using a slightly different board). Tested Hardware: Tyan Tiger S2460 [AMD 760MP] (Bios rev 1.02) Radeon 64DDR (PCI ID 1002:5144) Kernel: through 2.4.19-pre5-ac2 DRM: 4.1.x releases, 4.2.0 release, DRI CVS, DRI binary snapshots I'll gladly provide more details or perform more testing if it helps any. Thanks, --AHI _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
