Re: 2 bugs in the X server

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, 26 Jul 2006, Michal [utf-8] Maru?ka wrote:

Hello,
I know about 2 bugs in X server which are quite reproducible with my programs.
I use CVS from a month ago, but I noticed the first bug months ago already.

I use mga driver.

1/ There is a way to see a screen full of pixmaps (instead of what should be on
  the screen).

 I can reproduce this bug with sawfish WM.
 It has a mode to flip between viewspaces, while moving a window by mouse
 movement (and bumping into the border of the screen).

 When I do such movement w/ keyboard using mouse emulation, I can trigger this funny
 bug. Suddenly, after Sawfish does a series of requests to move windows, and
 warp pointer, I see pictures which are used in my (running) firefox browser,
 and I explain this that I see "off-screen" pixmaps.

 To recover from the wrong display I can either switch to another  console, or
 cycle resolution with  C-M-KP+/-.

I can't really help you with this problem, as I have no MGA hardware.

2/
 DBE (double-buffer extension) operations can make the server segfault.

 My guess is, that it is caused by the double-buffered window being too large:
 the DBE request are made by my quick & dirty experimental code for Sawfish, to
 draw window's title-bar, and the bug happens, when I construct a too large
 window (building gtk view-text widget with a long line inside, w/o scrolling
 enabled).

 Here's the ....

Caught signal 11.
Stack trace:
0: 0x808da2c: 0x808da10 xf86ShowStackTrace + 0x1c
       Module "XFree86"
1: 0x808db13: 0x808dab0 xf86SigHandler + 0x63
       Module "XFree86"
2: 0xffffe420: 0xffffe420 __kernel_sigreturn + 0x0
       Module ""
3: 0x813ca09: 0x813c8d0 miSpriteCopyArea + 0x139
       Module "/usr/xfree86-4.6/bin/XFree86"
4: 0xb7f95420: 0xb7f95360 miDbeSwapBuffers + 0xc0
       Module "/usr/xfree86-4.6/lib/modules/extensions/libdbe.a:midbe.o"
       Section ".text"
5: 0xb7f967b4: 0xb7f96690 ProcDbeSwapBuffers + 0x124
       Module "/usr/xfree86-4.6/lib/modules/extensions/libdbe.a:dbe.o"
       Section ".text"
6: 0x80c5fba: 0x80c5e60 Dispatch + 0x15a
       Module "XFree86"
7: 0x80d2327: 0x80d1f30 main + 0x3f7
       Module "XFree86"

Fatal server error:
Server aborting

That displacement in miSpriteCopyArea doesn't match anything I have here, likely because I have different compiler versions. Please do ...

	gdb /usr/xfree86-4.6/bin/XFree86
	disass miSpriteCopyArea
	quit

... and send the resulting output.

And I would like to ask, if there's a hope to get support for RV370[Radeon
X300SE] in xfree86.

Well, such support would have to be contributed, as the author/maintainer of Radeon support has moved on to the X.Org Foundation.

Thanks!

... and thank you!

Marc.

+----------------------------------+-----------------------------------+
|  Marc Aurele La France           |  work:   1-780-492-9310           |
|  Academic Information and        |  fax:    1-780-492-1729           |
|    Communications Technologies   |  email:  tsi@xxxxxxxxxxx          |
|  352 General Services Building   +-----------------------------------+
|  University of Alberta           |                                   |
|  Edmonton, Alberta               |     Standard disclaimers apply    |
|  T6G 2H1                         |                                   |
|  CANADA                          |                                   |
+----------------------------------+-----------------------------------+
XFree86 developer and VP.  ATI driver and X server internals.
_______________________________________________
Devel mailing list
Devel@xxxxxxxxxxx
http://XFree86.Org/mailman/listinfo/devel

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [X Forum]     [XFree86]     [XFree86 Newbie]     [X.Org]     [IETF Annouce]     [Security]     [Fontconfig]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]

  Powered by Linux