Most recent kernel where this bug did not occur:

Distribution: Mandriva 2005, Mandriva 2007

Hardware Environment: 
cat /proc/modules
tun 8576 1 - Live 0xe0c94000
8139too 22272 0 - Live 0xe0c9d000
mii 5120 1 8139too, Live 0xe0c38000
usbmouse 4736 0 - Live 0xe0c35000
usbhid 48160 0 - Live 0xe0cc4000
snd_rtctimer 2572 0 - Live 0xe0c17000
tsdev 6336 0 - Live 0xe0c32000
radeon 110880 1 - Live 0xe0ca7000
drm 60692 2 radeon, Live 0xe0c40000
joydev 8256 0 - Live 0xe0c1d000
mousedev 10144 1 - Live 0xe0c19000
psmouse 37512 0 - Live 0xe0c21000
cpufreq_ondemand 5104 0 - Live 0xe0bf0000
cpufreq_userspace 3220 0 - Live 0xe0bba000
cpufreq_powersave 1664 0 - Live 0xe0bb8000
p4_clockmod 4364 0 - Live 0xe0bb5000
speedstep_lib 3972 1 p4_clockmod, Live 0xe0bb3000
freq_table 3716 1 p4_clockmod, Live 0xe087c000
ipv6 228192 16 - Live 0xe0c51000
snd_seq_dummy 2948 0 - Live 0xe0bb1000
snd_seq_oss 30208 0 - Live 0xe0bbc000
snd_seq_midi_event 6016 1 snd_seq_oss, Live 0xe0b9a000
snd_seq 44752 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event, Live 0xe0be4000
snd_seq_device 6668 3 snd_seq_dummy,snd_seq_oss,snd_seq, Live 0xe0ba2000
snd_pcm_oss 42400 0 - Live 0xe0bd8000
snd_mixer_oss 15744 1 snd_pcm_oss, Live 0xe0b9d000
snd_ali5451 20108 1 - Live 0xe0b6c000
snd_ac97_codec 91168 1 snd_ali5451, Live 0xe0bf6000
snd_ac97_bus 2176 1 snd_ac97_codec, Live 0xe0b6a000
snd_pcm 69000 3 snd_pcm_oss,snd_ali5451,snd_ac97_codec, Live 0xe0bc6000
snd_timer 19588 3 snd_rtctimer,snd_seq,snd_pcm, Live 0xe0b45000
snd_page_alloc 8072 1 snd_pcm, Live 0xe0b67000
snd 42852 11
snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_ali5451,snd_ac97_codec,snd_pcm,snd_timer,
Live0xe0ba5000
soundcore 7392 1 snd, Live 0xe0b64000
parport_pc 31556 1 - Live 0xe0b8e000
lp 10312 0 - Live 0xe0b60000
parport 31560 2 parport_pc,lp, Live 0xe0b50000
irlan 24208 0 - Live 0xe0b59000
irda 108472 1 irlan, Live 0xe0b72000
crc_ccitt 2048 1 irda, Live 0xe087e000
af_packet 16136 0 - Live 0xe0b4b000
eeprom 5648 0 - Live 0xe0b42000
i2c_ali1535 6276 0 - Live 0xe0860000
pcmcia 30764 2 - Live 0xe0b30000
yenta_socket 24844 2 - Live 0xe0b3a000
rsrc_nonstatic 11264 1 yenta_socket, Live 0xe0b2c000
pcmcia_core 34064 3 pcmcia,yenta_socket,rsrc_nonstatic, Live 0xe0af6000
sbs 12448 0 - Live 0xe0af1000
i2c_ec 4224 1 sbs, Live 0xe0876000
i2c_core 16912 3 eeprom,i2c_ali1535,i2c_ec, Live 0xe0aeb000
ide_cd 36868 0 - Live 0xe0b21000
loop 13064 0 - Live 0xe0ae6000
nls_iso8859_2 4608 1 - Live 0xe0873000
nls_cp852 4864 1 - Live 0xe0863000
vfat 10112 1 - Live 0xe086f000
fat 46876 1 vfat, Live 0xe0ad9000
ali_agp 5760 1 - Live 0xe085d000
agpgart 28080 2 drm,ali_agp, Live 0xe0867000
nvram 6792 0 - Live 0xe082f000
evdev 8320 1 - Live 0xe0859000
ohci_hcd 18436 0 - Live 0xe0853000
usbcore 113924 4 usbmouse,usbhid,ohci_hcd, Live 0xe0a56000
video 14852 0 - Live 0xe0834000
thermal 11656 0 - Live 0xe0839000
processor 22956 1 thermal, Live 0xe0845000
ibm_acpi 24064 0 - Live 0xe083e000
fan 3844 0 - Live 0xe0832000
dock 5768 0 - Live 0xe081b000
container 3584 0 - Live 0xe0823000
button 5392 0 - Live 0xe0820000
battery 8196 0 - Live 0xe082b000
asus_acpi 14104 0 - Live 0xe0826000
ac 3844 0 - Live 0xe081e000


cat /proc/ioports
0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
0060-006f : keyboard
0070-0077 : rtc
0080-008f : dma page reg
00a0-00a1 : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
02f8-02ff : serial
0376-0376 : ide1
0378-037a : parport0
03c0-03df : vesafb
03f6-03f6 : ide0
03f8-03ff : serial
04d0-04d1 : pnp 00:07
04d6-04d6 : pnp 00:07
0778-077a : parport0
0cf8-0cff : PCI conf1
1000-10ff : 0000:00:04.0
 1000-10ff : ALI 5451
1400-14ff : 0000:00:08.0
 1400-14ff : 8139too
1800-180f : 0000:00:0b.0
1810-181f : 0000:00:0f.0
 1810-1817 : ide0
 1818-181f : ide1
1c00-1cff : PCI CardBus #02
2000-20ff : PCI CardBus #02
3810-381f : motherboard
 3810-381f : pnp 00:07
8000-803f : 0000:00:06.0
 8000-8003 : ACPI PM1a_EVT_BLK
 8004-8005 : motherboard
 8008-800b : ACPI PM_TMR
 8010-8015 : ACPI CPU throttle
 8018-8027 : ACPI GPE0_BLK
 8030-8030 : ACPI PM2_CNT_BLK
8040-805f : 0000:00:06.0
 8040-805f : ali1535_smbus
9000-9fff : PCI Bus #01
 9000-90ff : 0000:01:00.0
fe10-fe11 : motherboard
 fe10-fe11 : ACPI PM1a_CNT_BLK


cat /proc/iomem
00000000-0009f7ff : System RAM
0009f800-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000cefff : Video ROM
000cf000-000cffff : Adapter ROM
000f0000-000fffff : System ROM
00100000-1feeffff : System RAM
 00100000-0032dcff : Kernel code
 0032dd00-003e44f3 : Kernel data
1fef0000-1fefefff : ACPI Tables
1feff000-1fefffff : ACPI Non-volatile Storage
1ff00000-1fffffff : reserved
30000000-31ffffff : PCI CardBus #02
32000000-33ffffff : PCI CardBus #02
34000000-34000fff : 0000:00:0a.0
 34000000-34000fff : yenta_socket
e0000000-e0000fff : 0000:00:02.0
 e0000000-e0000fff : ohci_hcd
e0001000-e0001fff : 0000:00:04.0
 e0001000-e0001fff : ALI 5451
e0002000-e00020ff : 0000:00:08.0
 e0002000-e00020ff : 8139too
e0003000-e0003fff : 0000:00:09.0
e0100000-e01fffff : PCI Bus #01
 e0100000-e010ffff : 0000:01:00.0
 e0120000-e013ffff : 0000:01:00.0
e8000000-efffffff : PCI Bus #01
 e8000000-efffffff : 0000:01:00.0
   e8000000-e9ffffff : vesafb
f0000000-f7ffffff : 0000:00:00.0
fffc0000-ffffffff : reserved




lspci -vvv
00:00.0 Host bridge: ALi Corporation M1671 Super P4 Northbridge [AGP4X,PCI and
SDR/DDR] (rev 02)
       Subsystem: Hewlett-Packard Company: Unknown device 0027
       Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
       Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort+ >SERR- <PERR+
       Latency: 0
       Region 0: Memory at f0000000 (32-bit, prefetchable) [size=128M]
       Capabilities: <available only to root>

00:01.0 PCI bridge: ALi Corporation PCI to AGP Controller (prog-if 00 [Normal
decode])
       Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV+ VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
       Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
       Latency: 0
       Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
       I/O behind bridge: 00009000-00009fff
       Memory behind bridge: e0100000-e01fffff
       Prefetchable memory behind bridge: e8000000-efffffff
       BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B-

00:02.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03) (prog-if 10
[OHCI])
       Subsystem: Hewlett-Packard Company: Unknown device 0027
       Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
       Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
       Latency: 64 (20000ns max), cache line size 08
       Interrupt: pin A routed to IRQ 10
       Region 0: Memory at e0000000 (32-bit, non-prefetchable) [size=4K]
       Capabilities: <available only to root>

00:04.0 Multimedia audio controller: ALi Corporation M5451 PCI AC-Link
Controller Audio Device (rev 02)
       Subsystem: Hewlett-Packard Company: Unknown device 0027
       Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
       Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR+ <PERR+
       Latency: 64 (500ns min, 6000ns max)
       Interrupt: pin A routed to IRQ 11
       Region 0: I/O ports at 1000 [size=256]
       Region 1: Memory at e0001000 (32-bit, non-prefetchable) [size=4K]
       Capabilities: <available only to root>

00:06.0 Bridge: ALi Corporation M7101 Power Management Controller [PMU]
       Subsystem: Hewlett-Packard Company: Unknown device 0027
       Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
       Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-

00:07.0 ISA bridge: ALi Corporation M1533 PCI to ISA Bridge [Aladdin IV]
       Subsystem: Hewlett-Packard Company: Unknown device 0027
       Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
       Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
       Latency: 0
       Capabilities: <available only to root>

00:08.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)
       Subsystem: Hewlett-Packard Company: Unknown device 0027
       Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
       Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
       Latency: 64 (8000ns min, 16000ns max)
       Interrupt: pin A routed to IRQ 10
       Region 0: I/O ports at 1400 [size=256]
       Region 1: Memory at e0002000 (32-bit, non-prefetchable) [size=256]
       Capabilities: <available only to root>

00:09.0 Network controller: Intersil Corporation Prism 2.5 Wavelan chipset (rev 01)
       Subsystem: Actiontec Electronics Inc: Unknown device 1406
       Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
       Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
       Interrupt: pin A routed to IRQ 10
       Region 0: Memory at e0003000 (32-bit, prefetchable) [size=4K]
       Capabilities: <available only to root>

00:0a.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller
(rev 02)
       Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
       Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
       Latency: 168, cache line size 20
       Interrupt: pin A routed to IRQ 11
       Region 0: Memory at 34000000 (32-bit, non-prefetchable) [size=4K]
       Bus: primary=00, secondary=02, subordinate=05, sec-latency=176
       Memory window 0: 30000000-31fff000 (prefetchable)
       Memory window 1: 32000000-33fff000
       I/O window 0: 00001c00-00001cff
       I/O window 1: 00002000-000020ff
       BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+ 16bInt+ PostWrite+

00:0b.0 Communication controller: ESS Technology ES2838/2839 SuperLink Modem
(rev 01)
       Subsystem: Hewlett-Packard Company: Unknown device 0020
       Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
       Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
       Interrupt: pin A routed to IRQ 10
       Region 0: I/O ports at 1800 [size=16]
       Capabilities: <available only to root>

00:0f.0 IDE interface: ALi Corporation M5229 IDE (rev c4) (prog-if fa)
       Subsystem: Hewlett-Packard Company: Unknown device 0027
       Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
       Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
       Latency: 64 (500ns min, 1000ns max)
       Interrupt: pin A routed to IRQ 255
       Region 4: I/O ports at 1810 [size=16]
       Capabilities: <available only to root>

01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M6 LY
(prog-if 00 [VGA])
       Subsystem: Hewlett-Packard Company: Unknown device 0027
       Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping+ SERR+ FastB2B+
       Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
       Latency: 66 (2000ns min), cache line size 08
       Interrupt: pin A routed to IRQ 11
       Region 0: Memory at e8000000 (32-bit, prefetchable) [size=128M]
       Region 1: I/O ports at 9000 [size=256]
       Region 2: Memory at e0100000 (32-bit, non-prefetchable) [size=64K]
       Expansion ROM at e0120000 [disabled] [size=128K]
       Capabilities: <available only to root>




cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 15
model           : 2
model name      : Intel(R) Pentium(R) 4 Mobile CPU 1.40GHz
stepping        : 4
cpu MHz         : 1400.000
cache size      : 512 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat
pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips        : 2802.66



Software Environment: 
Xorg 6.8.2(Mandriva 2005), Xorg 7.1(Mandriva 2007)
 This is Xorg.conf:
# File generated by XFdrake.

# **********************************************************************
# Refer to the XF86Config man page for details about the format of
# this file.
# **********************************************************************

Section "Files"
    FontPath "/usr/X11R6/lib/X11/fonts/drakfont/Type1"
    FontPath "/usr/X11R6/lib/X11/fonts/Type1"
    FontPath "/usr/share/fonts/ttf/decoratives"
    FontPath "/usr/X11R6/lib/X11/fonts/drakfont/ttf"
    FontPath "/usr/X11R6/lib/X11/fonts/100dpi"
    FontPath "/usr/X11R6/lib/X11/fonts/TTF"
    FontPath "/usr/X11R6/lib/X11/fonts/drakfont"
    FontPath "/usr/share/fonts/default/Type1/adobestd35"
    FontPath "/usr/X11R6/lib/X11/fonts/75dpi"
    FontPath "/usr/share/fonts/ttf/dejavu"

    # Multiple FontPath entries are allowed (they are concatenated together)
     FontPath     "unix/:7100"

    FontPath "/usr/X11R6/lib/X11/fonts/misc"
    FontPath "/usr/X11R6/lib/X11/fonts/Speedo"
    FontPath "/usr/share/fonts/default/Type1"
    FontPath "/usr/share/fonts/ttf/western"

    # Multiple FontPath entries are allowed (they are concatenated together)
    # By default, Mandrake 6.0 and later now use a font server independent of
    # the X server to render fonts.
    FontPath "unix/:-1"
EndSection

Section "ServerFlags"
    #DontZap # disable <Crtl><Alt><BS> (server abort)
    AllowMouseOpenFail # allows the server to start up even if the mouse does
not work
    #DontZoom # disable <Crtl><Alt><KP_+>/<KP_-> (resolution switching)
    Option "AllowDeactivateGrabs" "true"
    Option "BlankTime" "2"
    Option "OffTime" "5"
EndSection

Section "Module"
    Load "dbe" # Double-Buffering Extension
    Load "v4l" # Video for Linux
    Load "extmod"
    Load "type1"
    Load "freetype"
    Load "dri" # direct rendering - this line makes troubles if enabled
    Load "glx"
    Load "rgb"
    Load "/usr/X11R6/lib/modules/extensions/libglx.a"
    Load "/usr/X11R6/lib/modules/extensions/libGLcore.a"
    Load "synaptics"
EndSection

Section "InputDevice"
    Identifier "Keyboard1"
    Driver "keyboard"
    Option "XkbModel" "pc105"
    Option "XkbLayout" "cz_qwerty"
    Option "XkbOptions" "compose:rwin"
EndSection

Section "InputDevice"
    Identifier "SynapticsMouse1"
    Driver "synaptics"
    Option "Protocol" "auto-dev"
    Option "Device" "/dev/input/mice"
    Option "MinSpeed" "0.09"
    Option "MaxSpeed" "0.18"
    Option "BottomEdge" "4200"
    Option "SHMConfig" "on"
    Option "FingerLow" "25"
    Option "LeftEdge" "1700"
    Option "MaxTapMove" "220"
    Option "MaxTapTime" "180"
    Option "FingerHigh" "30"
    Option "VertScrollDelta" "100"
    Option "TopEdge" "1700"
    Option "AccelFactor" "0.0015"
    Option "RightEdge" "5300"
EndSection

Section "InputDevice"
    Identifier "SynapticsMouse2"
    Driver "mouse"
    Option "Protocol" "ImPS/2"
    Option "Device" "/dev/input/mice"
    Option "ZAxisMapping"       "4 5"
EndSection

Section "InputDevice"
    Identifier "SynapticsMouse3"
    Driver "mouse"
    Option "Protocol" "PS/2"
    Option "Device" "/dev/input/event1"
    Option "ZAxisMapping"       "4 5"
EndSection


Section "Monitor"
    Identifier "monitor1"
    VendorName "Generic"
    ModelName "Flat Panel 1024x768"
    HorizSync 31.5-48.5
    VertRefresh 40-70
EndSection

Section "Device"
    Identifier "device1"
    VendorName "ATI"
    BoardName "ATI Radeon (fglrx)"
    Driver "radeon"
    Option "DPMS"
EndSection

Section "Screen"
    Identifier "screen1"
    Device "device1"
    Monitor "monitor1"
    DefaultColorDepth 24

    Subsection "Display"
        Depth 8
        Virtual 1024 768
    EndSubsection

    Subsection "Display"
        Depth 15
        Virtual 1024 768
    EndSubsection

    Subsection "Display"
        Depth 16
        Virtual 1024 768
    EndSubsection

    Subsection "Display"
        Depth 24
        Virtual 1024 768
    EndSubsection
EndSection

Section "ServerLayout"
    Identifier "layout1"
    InputDevice "Keyboard1" "CoreKeyboard"
    InputDevice "SynapticsMouse1" "SendCoreEvents"
    InputDevice "SynapticsMouse2"  "CorePointer"
    #InputDevice "SynapticsMouse3" "SendCoreEvents"
    Screen "screen1"
EndSection





Problem Description:
After resuming from suspend to disk Xorg with DRI switched on hangs. 
System is not affected by Xorg hang. If I login via SSH I can kill X 
server and start it again - with same result. X server hangs even after 
I suspend from text mode with X not running and with unloaded modules 
radeon and drm and resume then and try to start X server. With DRI 
switched off in xorg.conf X resumes correctly.

Steps to reproduce:
Suspend to disk and resume. Then Xorg with DRI extension switched on on R100
chips (ATI Radeon 7000, 7500 ...) hangs even thought it is terminated before
suspend and started again after resume.