Messages in this thread | | | Date | Mon, 7 Jun 1999 20:57:48 -0400 (EDT) | From | Mike Sackton <> | Subject | Bug in Matrox Framebuffer? |
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I caused a reproducible hard lockup today. I was ripping an mp3, with 8hz-mp3, which outputs status continually to the screen. I then scrolled up, but because of the output, I couldn't actually scroll up, so I held down shift-pageup, which caused the lock. The reason I suspect the matrox framebuffer code is because when I recompiled the kernel to use just the standard VGA console, the behavior went away. Magic SysReq does nothing when it is locked. This is kernel 2.2.9:
Linux isaac 2.2.9 #3 Fri Jun 4 22:42:50 EDT 1999 i686 unknown Kernel modules 2.1.121 Gnu C egcs-2.91.66 Binutils 2.9.1.0.23 Linux C Library 2.1.1 Dynamic linker ldd (GNU libc) 2.1.1 Procps 2.0.2 Mount 2.9o Net-tools 1.51 Kbd [option...] Sh-utils 1.16 Modules Loaded
.config: CONFIG_VIDEO_SELECT=y # CONFIG_MDA_CONSOLE is not set CONFIG_FB=y CONFIG_DUMMY_CONSOLE=y # CONFIG_FB_PM2 is not set # CONFIG_FB_VESA is not set CONFIG_VIDEO_SELECT=y CONFIG_FB_MATROX=y # CONFIG_FB_MATROX_MILLENIUM is not set # CONFIG_FB_MATROX_MYSTIQUE is not set CONFIG_FB_MATROX_G100=y # CONFIG_FB_MATROX_MULTIHEAD is not set # CONFIG_FB_ATY is not set # CONFIG_FB_VIRTUAL is not set # CONFIG_FBCON_ADVANCED is not set CONFIG_FBCON_CFB8=y CONFIG_FBCON_CFB16=y CONFIG_FBCON_CFB24=y CONFIG_FBCON_CFB32=y # CONFIG_FBCON_FONTWIDTH8_ONLY is not set # CONFIG_FBCON_FONTS is not set CONFIG_FONT_8x8=y CONFIG_FONT_8x16=y
dmesg:
matroxfb: Matrox Millennium G200 (AGP) detected matroxfb: MTRR's turned on matroxfb: 640x480x8bpp (virtual: 640x13100) matroxfb: framebuffer at 0xF4000000, mapped to 0xc8805000, size 8388608 Console: switching to colour frame buffer device 80x30 fb0: MATROX VGA frame buffer device
I'd be happy to do any debugging people want me to do. As I said, I can reproduce this at will.
Mike Sackton
-- "Sanity is a one trick pony, all you get is one trick, rational thinking. Insanity though, woohoo, the sky's the limit!" -The Tick
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