http://bugs.freedesktop.org/show_bug.cgi?id=15472
--- Comment #3 from Jie Luo <[EMAIL PROTECTED]> 2008-04-20 22:01:18 PST --- (In reply to comment #2) > After reading the graphic core document from intel video driver site. I did > some debug. Here is the result of dump debug register. > > This is the regdump of normal state. > IPEIR: 0 IPEHR: 0 > EIR: 0 ESR: 0 EMR: 0xffff > INSTDONE: 0xffc0 INSTPM: 0 > MEMMODE: 0x306 INSTPS: 0xf0000 > HWSTAM: 0xfffe IER: 0x2 IMR: 0 IIR: 0x20 > > This is the regdump of the state ESR being set to 0x00000001. > IPEIR: 0 IPEHR: 0 > EIR: 0 ESR: 0x1 EMR: 0xffff > INSTDONE: 0xffc0 INSTPM: 0 > MEMMODE: 0x306 INSTPS: 0xf0000 > HWSTAM: 0xfffe IER: 0xa2 IMR: 0 IIR: 0x50 > > According to the document, ESR being set to 0x1 indicate Instruction Error. > The > document said that IPEHR register contains the header (DWord 0) of the > faulting > instruction. So the faulting instruction is a MI instruction. IER being set to > be 0xa2 means 'Display Plane C Flip Pending' and 'Display Pipe B VBLANK' is > enabled. But because I don't have a PIPE C, this means the Instruction Error > is > caused by a MI_DISPLAY_BUFFER_INFO instruction with a defeatured opcode (PIPE > C). Any comments? > It seams that my thought above is not correct. The only thing I'm sure is that glXSwapBuffers() may cause this instruction error. My test is done with glxdemo program. With LIBGL_ALWAYS_INDIRECT=1, glxdemo doesn't cause instruction error without call glXSwapBuffers(), but will cause this error with glXSwapBuffers() after some resizing and moving. I give up to track down this problem, it too complicated for me to do this. -- Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone -- _______________________________________________ Dri-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dri-devel
