[Bug 40790] r600g readPixSanity failure on RS880 Radeon HD 4250

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=40790

--- Comment #6 from Nicholas Miell <nmiell at gmail.com> 2011-09-24 13:09:11 PDT ---
When booting to runlevel 3 and using startx with an .xinitrc that starts only
an xterm, both the basic and readPixSanity tests fail.

basic:
Returncode: 1

Errors:
X Error of failed request:  BadDrawable (invalid Pixmap or Window parameter)
  Major opcode of failed request:  72 (X_PutImage)
  Resource id in failed request:  0x600011
  Serial number of failed request:  91
  Current serial number in output stream:  95


Output:
----------------------------------------------------------------------
This trivial test simply verifies the internal support for basic
tests.  It is run on every OpenGL-capable drawing surface
configuration that supports creation of a window.

basic:  PASS rgba8, db, z24, s8, win+pmap, id 33
basic:  PASS rgba8, db, z24, s8, win+pmap, id 34
basic:  PASS rgba8, db, z24, s8, win+pmap, id 109
basic:  PASS rgba8, win+pmap, id 254


readPixSanity:
Returncode: 1

Errors:
X Error of failed request:  BadDrawable (invalid Pixmap or Window parameter)
  Major opcode of failed request:  72 (X_PutImage)
  Resource id in failed request:  0x600011
  Serial number of failed request:  2090
  Current serial number in output stream:  2094


Output:
----------------------------------------------------------------------
This test performs a sanity check of glReadPixels, using as
few other portions of the GL as possible.  If this test fails,
it may be pointless to run other tests, since so many of them
depend on reading the contents of the framebuffer to determine
if they pass.

The test works by using glClear to fill the framebuffer with a
randomly-chosen value, reading the contents of the
framebuffer, and comparing the actual contents with the
expected contents.  RGB, RGBA, color index, stencil, and depth
buffers (whichever are applicable to the current rendering
context) are checked.  The test passes if the actual contents
are within 1 LSB of the expected contents.

readPixSanity:  PASS rgba8, db, z24, s8, win+pmap, id 33
    RGBA largest readback error was 0 bits
    Depth largest readback error was 0 bits
readPixSanity:  PASS rgba8, db, z24, s8, win+pmap, id 34
    RGBA largest readback error was 0 bits
    Depth largest readback error was 0 bits
readPixSanity:  PASS rgba8, db, z24, s8, win+pmap, id 109
    RGBA largest readback error was 0 bits
    Depth largest readback error was 0 bits
readPixSanity:  PASS rgba8, win+pmap, id 254
    RGBA largest readback error was 0 bits

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