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On Mon, Jun 23, 2008 at 05:38:59AM -0700, Frans Pop wrote: > On Sunday 15 June 2008, Siddha, Suresh B wrote: > > Frans Pop wrote: > > > On Saturday 14 June 2008, Rafael J. Wysocki wrote: > > > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10843 > > > > Subject : Display artifacts on XOrg logout with PAT kernel > > > > and VESA framebuffer > > > > Submitter : Frans Pop <elendil@planet.nl> > > > > Date : 2008-05-31 14:04 (15 days old) > > > > References : http://lkml.org/lkml/2008/6/7/206 > > > > > > Yes. See also: http://lkml.org/lkml/2008/6/13/159 > > > > Frans, With or without pat, in the recent kernels (like 2.6.26-rc4/rc5 > > etc), ioremap() uses UC- and PCI mmap of /sys/devices/pci.../resource > > (used by X) uses UC- > > > > And fb_mmap() also uses UC-. > > > > It's interesting that you don't see this artifact with "nopat". > > Essentially with or with out pat enabled, we use the same memory > > attributes. So depending on the MTRR setup (set by X server), effective > > memory attribute across different mappings should be same (which is UC- > > or WC with mtrr). > > Any progress on this issue? It's still there with -rc7, but I doubt that > comes as a surprise. > > Has anyone tried to reproduce this? I would think that should be trivial. > > Just as a summary: > - Intel 82945G/GZ graphics [8086:2772] (ICH7 based system) > - FB_VESA=y, FRAMEBUFFER_CONSOLE=y > - boot with vga=791 > - Log in to X and KDE; I do need to really log in there are no artifacts > if I exit X from the kdm login dialog > - artifacts show on logout > > I doubt it's KDE related or even related to my specific graphics card. > > It may well be related to what is or has been displayed on the display > before logging out, so running some apps may make sense. Seems like I do > see remnants of for example aptitude (Debian apt frontend) after I've run > it in an X term (KDE's konsole). FJP, We will try to reproduce this and getback. Your earlier responses did not give many clues. thanks, suresh | ||||||||||||
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