Messages in this thread |  | | Date | Sun, 29 Jun 2003 01:24:21 +0200 | From | "Luca T." <> | Subject | /dev/random broken? |
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Hello, i am not sure if this is a kernel/module problem but so it seems to me. My computer is an AMD 2000+ with an ABIT motherboard, my kernel version is 2.4.21-0.13mdk (but i tried it with 2.4.21-0.18mdk too and it doesn't work either).
If i give this command: dd if=/dev/zero of=./xxx bs=1024 count=100 it will work perfectly. But if i try to do the same reading from /dev/random with this command: dd if=/dev/random of=./xxx bs=1024 count=100 it will just sit there and stare at me until i move the mouse... and then the program will exit without any error message (i checked in /var/log/messages too and there is no message there either about this).
Is this a bug? If yes... do you have any idea that would help me fix it?
Thank you, Luca
P.S.: I add here more info about my configuration:
[luca@ATH2000 luca]$ cat /proc/version Linux version 2.4.21-0.13mdk (flepied@bi.mandrakesoft.com) (gcc version 3.2.2 (Mandrake Linux 9.1 3.2.2-3mdk)) #1 Fri Mar 14 15:08:06 EST 2003
[luca@ATH2000 luca]$ cat /proc/modules saa7113h 7776 0 (autoclean) rivatv 68156 0 i2c-algo-bit 9064 2 [rivatv] i2c-core 21192 0 [saa7113h rivatv i2c-algo-bit] appletalk 25700 1 (autoclean) ipx 21252 1 (autoclean) parport_pc 25096 1 (autoclean) lp 8096 0 (autoclean) parport 34176 1 (autoclean) [parport_pc lp] agpgart 40896 3 (autoclean) [rivatv] NVdriver 1149824 10 (autoclean) nls_cp437 5148 2 (autoclean) nls_iso8859-1 3516 2 (autoclean) smbfs 40144 2 (autoclean) es1371 29000 1 soundcore 6276 0 [es1371] ac97_codec 12488 0 [es1371] gameport 3316 0 [es1371] nfsd 74256 0 (autoclean) af_packet 14952 0 (autoclean) sr_mod 16920 0 (autoclean) floppy 55132 0 8139too 17160 1 (autoclean) mii 3832 0 (autoclean) [8139too] supermount 15296 3 (autoclean) ide-cd 33856 0 cdrom 31648 0 [sr_mod ide-cd] ide-scsi 11280 0 pwc 45064 0 videodev 7872 3 [rivatv pwc] usbmouse 2936 0 (unused) keybdev 2720 0 (unused) mousedev 5268 0 (unused) hid 20900 0 (unused) evdev 5632 1 wacom 7096 0 (unused) input 5664 0 [usbmouse keybdev mousedev hid evdev wacom] printer 8448 0 (unused) usb-uhci 24652 0 (unused) usbcore 72992 1 [pwc usbmouse hid wacom printer usb-uhci] rtc 8060 0 (autoclean) reiserfs 175120 2 sd_mod 11548 0 (unused) ataraid 6852 0 (unused) scsi_mod 91796 3 [sr_mod ide-scsi sd_mod]
[luca@ATH2000 luca]$ cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 8 model name : AMD Athlon(tm) XP 2000+ stepping : 0 cpu MHz : 1667.412 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow bogomips : 3329.22
[luca@ATH2000 luca]$ cat /proc/ioports 0000-001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0070-007f : rtc 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 01f0-01f7 : ide0 02f8-02ff : serial(auto) 0378-037a : parport0 037b-037f : parport0 03c0-03df : vga+ 03f6-03f6 : ide0 03f8-03ff : serial(auto) 0cf8-0cff : PCI conf1 c000-c0ff : Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ c000-c0ff : 8139too c400-c43f : Ensoniq 5880 AudioPCI c400-c43f : es1371 c800-c80f : VIA Technologies, Inc. VT82C586B PIPC Bus Master IDE c800-c807 : ide0 c808-c80f : ide1 cc00-cc1f : VIA Technologies, Inc. USB cc00-cc1f : usb-uhci d000-d01f : VIA Technologies, Inc. USB (#2) d000-d01f : usb-uhci d400-d407 : Triones Technologies, Inc. HPT366/368/370/370A/372 d800-d803 : Triones Technologies, Inc. HPT366/368/370/370A/372 dc00-dc07 : Triones Technologies, Inc. HPT366/368/370/370A/372 dc00-dc07 : ide3 e000-e003 : Triones Technologies, Inc. HPT366/368/370/370A/372 e002-e002 : ide3 e400-e4ff : Triones Technologies, Inc. HPT366/368/370/370A/372 e400-e407 : ide2 e408-e40f : ide3 e410-e4ff : HPT372
[luca@ATH2000 luca]$ cat /proc/ioports 0000-001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0070-007f : rtc 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 01f0-01f7 : ide0 02f8-02ff : serial(auto) 0378-037a : parport0 037b-037f : parport0 03c0-03df : vga+ 03f6-03f6 : ide0 03f8-03ff : serial(auto) 0cf8-0cff : PCI conf1 c000-c0ff : Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ c000-c0ff : 8139too c400-c43f : Ensoniq 5880 AudioPCI c400-c43f : es1371 c800-c80f : VIA Technologies, Inc. VT82C586B PIPC Bus Master IDE c800-c807 : ide0 c808-c80f : ide1 cc00-cc1f : VIA Technologies, Inc. USB cc00-cc1f : usb-uhci d000-d01f : VIA Technologies, Inc. USB (#2) d000-d01f : usb-uhci d400-d407 : Triones Technologies, Inc. HPT366/368/370/370A/372 d800-d803 : Triones Technologies, Inc. HPT366/368/370/370A/372 dc00-dc07 : Triones Technologies, Inc. HPT366/368/370/370A/372 dc00-dc07 : ide3 e000-e003 : Triones Technologies, Inc. HPT366/368/370/370A/372 e002-e002 : ide3 e400-e4ff : Triones Technologies, Inc. HPT366/368/370/370A/372 e400-e407 : ide2 e408-e40f : ide3 e410-e4ff : HPT372 [luca@ATH2000 luca]$ [luca@ATH2000 luca]$ cat /proc/iomem 00000000-0009fbff : System RAM 0009fc00-0009ffff : reserved 000a0000-000bffff : Video RAM area 000c0000-000c7fff : Video ROM 000cc000-000cfdff : Extension ROM 000f0000-000fffff : System ROM 00100000-1ffeffff : System RAM 00100000-00260a36 : Kernel code 00260a37-0037831f : Kernel data 1fff0000-1fff2fff : ACPI Non-volatile Storage 1fff3000-1fffffff : ACPI Tables d0000000-d7ffffff : VIA Technologies, Inc. VT8367 [KT266] d8000000-d9ffffff : PCI Bus #01 d8000000-d9ffffff : nVidia Corporation NV5 [Riva TnT2] d8000000-d9ffffff : rivatv da000000-dbffffff : PCI Bus #01 da000000-daffffff : nVidia Corporation NV5 [Riva TnT2] da000000-daffffff : rivatv dd000000-dd0000ff : Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ dd000000-dd0000ff : 8139too fec00000-fec00fff : reserved fee00000-fee00fff : reserved ffff0000-ffffffff : reserved
[root@ATH2000 luca]# lspci -vvv 00:00.0 Host bridge: VIA Technologies, Inc. VT8366/A/7 [Apollo KT266/A/333] 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 d0000000 (32-bit, prefetchable) [size=128M] Capabilities: [a0] AGP version 2.0 Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW- AGP3- Rate=x1,x2 Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP+ GART64- 64bit- FW- Rate=x2 Capabilities: [c0] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:01.0 PCI bridge: VIA Technologies, Inc. VT8366/A/7 [Apollo KT266/A/333 AGP] (prog-if 00 [Normal decode]) 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 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 0000f000-00000fff Memory behind bridge: da000000-dbffffff Prefetchable memory behind bridge: d8000000-d9ffffff BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B- Capabilities: [80] Power Management version 2 Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:0d.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) Subsystem: Unex Technology Corp. ND010 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: 32 (8000ns min, 16000ns max) Interrupt: pin A routed to IRQ 5 Region 0: I/O ports at c000 [size=256] Region 1: Memory at dd000000 (32-bit, non-prefetchable) [size=256] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1+,D2+,D3hot+,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:0f.0 Multimedia audio controller: Ensoniq 5880 AudioPCI (rev 02) Subsystem: Ensoniq Creative Sound Blaster AudioPCI128 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: 32 (3000ns min, 32000ns max) Interrupt: pin A routed to IRQ 5 Region 0: I/O ports at c400 [size=64] Capabilities: [dc] Power Management version 1 Flags: PMEClk- DSI+ D1- D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:11.0 ISA bridge: VIA Technologies, Inc. VT8233A ISA Bridge Subsystem: VIA Technologies, Inc. VT8233A ISA Bridge 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: [c0] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:11.1 IDE interface: VIA Technologies, Inc. VT82C586/B/686A/B PIPC Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP]) Subsystem: VIA Technologies, Inc. VT8235 Bus Master ATA133/100/66/33 IDE 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: 32 Interrupt: pin A routed to IRQ 0 Region 4: I/O ports at c800 [size=16] Capabilities: [c0] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:11.2 USB Controller: VIA Technologies, Inc. USB (rev 23) (prog-if 00 [UHCI]) Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller 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: 32, cache line size 08 Interrupt: pin D routed to IRQ 11 Region 4: I/O ports at cc00 [size=32] Capabilities: [80] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:11.3 USB Controller: VIA Technologies, Inc. USB (rev 23) (prog-if 00 [UHCI]) Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller 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: 32, cache line size 08 Interrupt: pin D routed to IRQ 11 Region 4: I/O ports at d000 [size=32] Capabilities: [80] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:13.0 RAID bus controller: Triones Technologies, Inc. HPT366/368/370/370A/372 (rev 05) Subsystem: Triones Technologies, Inc. HPT370A 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: 120 (2000ns min, 2000ns max), cache line size 08 Interrupt: pin A routed to IRQ 10 Region 0: I/O ports at d400 [size=8] Region 1: I/O ports at d800 [size=4] Region 2: I/O ports at dc00 [size=8] Region 3: I/O ports at e000 [size=4] Region 4: I/O ports at e400 [size=256] Expansion ROM at <unassigned> [disabled] [size=128K] Capabilities: [60] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
01:00.0 VGA compatible controller: nVidia Corporation NV5 [RIVA TNT2/TNT2 Pro] (rev 11) (prog-if 00 [VGA]) Subsystem: Asustek Computer, Inc. AGP-V3800 SGRAM 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: 248 (1250ns min, 250ns max) Interrupt: pin A routed to IRQ 11 Region 0: Memory at da000000 (32-bit, non-prefetchable) [size=16M] Region 1: Memory at d8000000 (32-bit, prefetchable) [size=32M] Expansion ROM at <unassigned> [disabled] [size=64K] Capabilities: [60] Power Management version 1 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [44] AGP version 2.0 Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW- AGP3- Rate=x1,x2 Command: RQ=32 ArqSz=0 Cal=0 SBA- AGP+ GART64- 64bit- FW- Rate=x2
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