CWP
n00b
Joined: 01 Mar 2006
Posts: 4
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 Posted: Sun May 06, 2007 8:58 pm Post subject: udev creates the wrong ttyS |
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I've tried this on two different computers and got the same result. Each time the system starts, udev always creates the wrong /dev file. No matter how I configure it in the BIOS, udev decides that I should use different COM ports.
Here are some information that may be relevant:
System #1: Runs kernel 2.6.20-gentoo-r7 with udev-104-r12
System #2: Runs kernel 2.6.20-hardened-r2 with udev-104-r12
grep 8250 /usr/src/linux/.config:
| Code: | CONFIG_SERIAL_8250=m
CONFIG_SERIAL_8250_PCI=m
CONFIG_SERIAL_8250_PNP=m
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set
# Non-8250 serial port support
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* Note: just tried changing both NR_UARTS and RUNTIME_UARTS to 2, udev won't even create any ttyS.
BIOS Configuration:
COM1: 3F8/IRQ4
COM2: 2F8/IRQ3
dmesg
| Code: | Linux version 2.6.20-gentoo-r7 (root@falcon) (gcc version 4.1.1 (Gentoo 4.1.1-r3)) #1 PREEMPT Fri May 4 18:41:03 EDT 2007
BIOS-provided physical RAM map:
sanitize start
sanitize end
copy_e820_map() start: 0000000000000000 size: 000000000009fc00 end: 000000000009fc00 type: 1
copy_e820_map() type is E820_RAM
copy_e820_map() start: 000000000009fc00 size: 0000000000000400 end: 00000000000a0000 type: 2
copy_e820_map() start: 00000000000f0000 size: 0000000000010000 end: 0000000000100000 type: 2
copy_e820_map() start: 0000000000100000 size: 000000003fef0000 end: 000000003fff0000 type: 1
copy_e820_map() type is E820_RAM
copy_e820_map() start: 000000003fff0000 size: 0000000000003000 end: 000000003fff3000 type: 4
copy_e820_map() start: 000000003fff3000 size: 000000000000d000 end: 0000000040000000 type: 3
copy_e820_map() start: 00000000fec00000 size: 0000000000001000 end: 00000000fec01000 type: 2
copy_e820_map() start: 00000000fee00000 size: 0000000000001000 end: 00000000fee01000 type: 2
copy_e820_map() start: 00000000ffff0000 size: 0000000000010000 end: 0000000100000000 type: 2
BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000003fff0000 (usable)
BIOS-e820: 000000003fff0000 - 000000003fff3000 (ACPI NVS)
BIOS-e820: 000000003fff3000 - 0000000040000000 (ACPI data)
BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
Warning only 896MB will be used.
Use a HIGHMEM enabled kernel.
896MB LOWMEM available.
Entering add_active_range(0, 0, 229376) 0 entries of 256 used
Zone PFN ranges:
DMA 0 -> 4096
Normal 4096 -> 229376
early_node_map[1] active PFN ranges
0: 0 -> 229376
On node 0 totalpages: 229376
DMA zone: 32 pages used for memmap
DMA zone: 0 pages reserved
DMA zone: 4064 pages, LIFO batch:0
Normal zone: 1760 pages used for memmap
Normal zone: 223520 pages, LIFO batch:31
DMI 2.2 present.
ACPI: RSDP (v000 Nvidia ) @ 0x000f72f0
ACPI: RSDT (v001 Nvidia AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x3fff3000
ACPI: FADT (v001 Nvidia AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x3fff3040
ACPI: MADT (v001 Nvidia AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x3fff7d00
ACPI: DSDT (v001 NVIDIA AWRDACPI 0x00001000 MSFT 0x0100000e) @ 0x00000000
Nvidia board detected. Ignoring ACPI timer override.
If you got timer trouble try acpi_use_timer_override
Nvidia board detected. Ignoring ACPI timer override.
If you got timer trouble try acpi_use_timer_override
ACPI: PM-Timer IO Port: 0x4008
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 6:10 APIC version 16
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 2, version 17, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: BIOS IRQ0 pin2 override ignored.
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 14 global_irq 14 high edge)
ACPI: INT_SRC_OVR (bus 0 bus_irq 15 global_irq 15 high edge)
ACPI: IRQ9 used by override.
ACPI: IRQ14 used by override.
ACPI: IRQ15 used by override.
Enabling APIC mode: Flat. Using 1 I/O APICs
Using ACPI (MADT) for SMP configuration information
Allocating PCI resources starting at 50000000 (gap: 40000000:bec00000)
Detected 2171.593 MHz processor.
Built 1 zonelists. Total pages: 227584
Kernel command line: root=/dev/hda2
mapped APIC to ffffd000 (fee00000)
mapped IOAPIC to ffffc000 (fec00000)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 16384 bytes)
Console: colour VGA+ 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 906840k/917504k available (1397k kernel code, 10188k reserved, 516k data, 132k init, 0k highmem)
virtual kernel memory layout:
fixmap : 0xfffb7000 - 0xfffff000 ( 288 kB)
vmalloc : 0xf8800000 - 0xfffb5000 ( 119 MB)
lowmem : 0xc0000000 - 0xf8000000 ( 896 MB)
.init : 0xc02e2000 - 0xc0303000 ( 132 kB)
.data : 0xc025d6ef - 0xc02de7ec ( 516 kB)
.text : 0xc0100000 - 0xc025d6ef (1397 kB)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 4344.82 BogoMIPS (lpj=2172414)
Mount-cache hash table entries: 512
CPU: After generic identify, caps: 0383fbff c1c3fbff 00000000 00000000 00000000 00000000 00000000
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 512K (64 bytes/line)
CPU: After all inits, caps: 0383fbff c1c3fbff 00000000 00000420 00000000 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: AMD Athlon(tm) XP 3000+ stepping 00
Checking 'hlt' instruction... OK.
ACPI: Core revision 20060707
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 apic1=0 pin1=0 apic2=-1 pin2=-1
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: PCI BIOS revision 2.10 entry at 0xfb440, last bus=2
PCI: Using configuration type 1
Setting up standard PCI resources
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
PCI: nForce2 C1 Halt Disconnect fixup
0000:00:09.0: cannot adjust BAR0 (not I/O)
0000:00:09.0: cannot adjust BAR1 (not I/O)
0000:00:09.0: cannot adjust BAR2 (not I/O)
0000:00:09.0: cannot adjust BAR3 (not I/O)
Boot video device is 0000:02:00.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.AGPB._PRT]
ACPI: PCI Interrupt Link [LNK1] (IRQs 3 4 *5 6 7 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNK2] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNK3] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNK4] (IRQs 3 4 5 6 7 10 *11 12 14 15)
ACPI: PCI Interrupt Link [LNK5] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LUBA] (IRQs 3 4 *5 6 7 10 11 12 14 15)
ACPI: PCI Interrupt Link [LUBB] (IRQs 3 4 5 6 7 10 *11 12 14 15)
ACPI: PCI Interrupt Link [LMAC] (IRQs 3 4 5 6 7 10 *11 12 14 15)
ACPI: PCI Interrupt Link [LAPU] (IRQs 3 4 *5 6 7 10 11 12 14 15)
ACPI: PCI Interrupt Link [LACI] (IRQs 3 4 5 6 7 10 *11 12 14 15)
ACPI: PCI Interrupt Link [LMCI] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LSMB] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LUB2] (IRQs 3 4 *5 6 7 10 11 12 14 15)
ACPI: PCI Interrupt Link [LFIR] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [L3CM] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LIDE] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [APC1] (IRQs *16), disabled.
ACPI: PCI Interrupt Link [APC2] (IRQs *17), disabled.
ACPI: PCI Interrupt Link [APC3] (IRQs *18), disabled.
ACPI: PCI Interrupt Link [APC4] (IRQs *19), disabled.
ACPI: PCI Interrupt Link [APC5] (IRQs *16), disabled.
ACPI: PCI Interrupt Link [APCF] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [APCG] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [APCH] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [APCI] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [APCJ] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [APCK] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [APCS] (IRQs *23), disabled.
ACPI: PCI Interrupt Link [APCL] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [APCM] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [AP3C] (IRQs 20 21 22) *0, disabled.
ACPI: PCI Interrupt Link [APCZ] (IRQs 20 21 22) *0, disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
pnp: PnP ACPI: found 16 devices
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report
pnp: 00:00: ioport range 0x4000-0x407f could not be reserved
pnp: 00:00: ioport range 0x4080-0x40ff has been reserved
pnp: 00:00: ioport range 0x4400-0x447f has been reserved
pnp: 00:00: ioport range 0x4480-0x44ff could not be reserved
pnp: 00:00: ioport range 0x4200-0x427f has been reserved
pnp: 00:00: ioport range 0x4280-0x42ff has been reserved
pnp: 00:01: ioport range 0x5000-0x503f has been reserved
pnp: 00:01: ioport range 0x5100-0x513f has been reserved
PCI: Bridge: 0000:00:08.0
IO window: 9000-9fff
MEM window: ea000000-eaffffff
PREFETCH window: disabled.
PCI: Bridge: 0000:00:1e.0
IO window: a000-afff
MEM window: e8000000-e9ffffff
PREFETCH window: d8000000-e7ffffff
PCI: Setting latency timer of device 0000:00:08.0 to 64
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 7, 524288 bytes)
TCP bind hash table entries: 65536 (order: 6, 262144 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
Machine check exception polling timer started.
io scheduler noop registered
io scheduler cfq registered (default)
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
NFORCE2: IDE controller at PCI slot 0000:00:09.0
NFORCE2: chipset revision 162
NFORCE2: not 100% native mode: will probe irqs later
NFORCE2: BIOS didn't set cable bits correctly. Enabling workaround.
NFORCE2: 0000:00:09.0 (rev a2) UDMA133 controller
ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
Probing IDE interface ide0...
hda: Maxtor 6Y060L0, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: HL-DT-STDVD-ROM GDR8161B, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 120103200 sectors (61492 MB) w/2048KiB Cache, CHS=65535/16/63<6>hda: hw_config=600d
, UDMA(133)
hda: cache flushes supported
hda: hda1 hda2 hda3
hdc: ATAPI 48X DVD-ROM drive, 256kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
PNP: PS/2 Controller [PNP0f13:PS2M] at 0x60,0x64 irq 12
PNP: PS/2 controller doesn't have KBD irq; using default 1
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12
mice: PS/2 mouse device common for all mice
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
Using IPI Shortcut mode
Time: tsc clocksource has been installed.
ReiserFS: hda2: found reiserfs format "3.6" with standard journal
ReiserFS: hda2: using ordered data mode
ReiserFS: hda2: journal params: device hda2, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
ReiserFS: hda2: checking transaction log (hda2)
ReiserFS: hda2: Using r5 hash to sort names
VFS: Mounted root (reiserfs filesystem) readonly.
Freeing unused kernel memory: 132k freed
i2c_adapter i2c-0: nForce2 SMBus adapter at 0x5000
i2c_adapter i2c-1: nForce2 SMBus adapter at 0x5100
Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected NVIDIA nForce2 chipset
agpgart: AGP aperture is 128M @ 0xd0000000
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
ACPI: PCI Interrupt Link [APCL] enabled at IRQ 22
ACPI: PCI Interrupt 0000:00:02.2[C] -> Link [APCL] -> GSI 22 (level, high) -> IRQ 16
PCI: Setting latency timer of device 0000:00:02.2 to 64
ehci_hcd 0000:00:02.2: EHCI Host Controller
ehci_hcd 0000:00:02.2: new USB bus registered, assigned bus number 1
ehci_hcd 0000:00:02.2: debug port 1
PCI: cache line size of 64 is not supported by device 0000:00:02.2
ehci_hcd 0000:00:02.2: irq 16, io mem 0xeb084000
ehci_hcd 0000:00:02.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 6 ports detected
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
00:0a: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
00:0b: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
forcedeth.c: Reverse Engineered nForce ethernet driver. Version 0.59.
parport: PnPBIOS parport detected.
parport0: PC-style at 0x378 (0x778), irq 7 [PCSPP,TRISTATE,EPP]
ohci_hcd: 2006 August 04 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
ACPI: PCI Interrupt Link [APCF] enabled at IRQ 21
ACPI: PCI Interrupt 0000:00:02.0[A] -> Link [APCF] -> GSI 21 (level, high) -> IRQ 17
PCI: Setting latency timer of device 0000:00:02.0 to 64
ohci_hcd 0000:00:02.0: OHCI Host Controller
ohci_hcd 0000:00:02.0: new USB bus registered, assigned bus number 2
ohci_hcd 0000:00:02.0: irq 17, io mem 0xeb080000
usb usb2: configuration #1 chosen from 1 choice
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 3 ports detected
ACPI: PCI Interrupt Link [APCG] enabled at IRQ 20
ACPI: PCI Interrupt 0000:00:02.1[B] -> Link [APCG] -> GSI 20 (level, high) -> IRQ 18
PCI: Setting latency timer of device 0000:00:02.1 to 64
ohci_hcd 0000:00:02.1: OHCI Host Controller
ohci_hcd 0000:00:02.1: new USB bus registered, assigned bus number 3
ohci_hcd 0000:00:02.1: irq 18, io mem 0xeb083000
usb usb3: configuration #1 chosen from 1 choice
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 3 ports detected
8139too Fast Ethernet driver 0.9.28
ACPI: PCI Interrupt Link [APCH] enabled at IRQ 22
ACPI: PCI Interrupt 0000:00:04.0[A] -> Link [APCH] -> GSI 22 (level, high) -> IRQ 16
PCI: Setting latency timer of device 0000:00:04.0 to 64
eth0: forcedeth.c: subsystem: 010de:0c11 bound to 0000:00:04.0
ACPI: PCI Interrupt Link [APCJ] enabled at IRQ 21
ACPI: PCI Interrupt 0000:00:06.0[A] -> Link [APCJ] -> GSI 21 (level, high) -> IRQ 17
PCI: Setting latency timer of device 0000:00:06.0 to 64
input: ImPS/2 Logitech Wheel Mouse as /class/input/input0
intel8x0_measure_ac97_clock: measured 50796 usecs
intel8x0: clocking to 47498
ACPI: PCI Interrupt Link [APC1] enabled at IRQ 16
ACPI: PCI Interrupt 0000:01:0c.0[A] -> Link [APC1] -> GSI 16 (level, high) -> IRQ 19
eth1: RealTek RTL8139 at 0xf88f0000, 00:01:29:82:00:bc, IRQ 19
eth1: Identified 8139 chip type 'RTL-8101'
NET: Registered protocol family 10
Real Time Clock Driver v1.12ac
eth0: no link during initialization.
ADDRCONF(NETDEV_UP): eth0: link is not ready
eth1: link up, 10Mbps, half-duplex, lpa 0x0000
Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
eth1: no IPv6 routers present
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ls -l /dev/ttyS*
| Code: | crw-rw---- 1 root uucp 4, 64 May 6 11:05 /dev/ttyS2
crw-rw---- 1 root uucp 4, 65 May 6 11:05 /dev/ttyS3
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lsmod
| Code: | Module Size Used by
nfsd 80744 13
exportfs 4288 1 nfsd
lockd 51848 2 nfsd
nfs_acl 2624 1 nfsd
sunrpc 126652 10 nfsd,lockd,nfs_acl
snd_pcm_oss 34464 0
snd_mixer_oss 12928 1 snd_pcm_oss
snd_seq_oss 25536 0
snd_seq_midi_event 5568 1 snd_seq_oss
snd_seq 39632 4 snd_seq_oss,snd_seq_midi_event
snd_seq_device 5836 2 snd_seq_oss,snd_seq
rtc 9712 0
ext2 47688 1
mbcache 6148 1 ext2
ipv6 191840 18
psmouse 31368 0
8139too 19264 0
bitrev 1600 1 8139too
crc32 3712 1 8139too
ohci_hcd 16324 0
snd_intel8x0 26076 0
snd_ac97_codec 84836 1 snd_intel8x0
ac97_bus 1856 1 snd_ac97_codec
snd_pcm 59528 3 snd_pcm_oss,snd_intel8x0,snd_ac97_codec
snd_timer 16388 2 snd_seq,snd_pcm
snd 38756 9 snd_pcm_oss,snd_mixer_oss,snd_seq_oss,snd_seq,snd_seq_device,snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer
soundcore 5600 1 snd
snd_page_alloc 6920 2 snd_intel8x0,snd_pcm
parport_pc 21988 0
parport 29960 1 parport_pc
forcedeth 36104 0
8250_pnp 8832 0
8250 17380 1 8250_pnp
serial_core 15488 1 8250
ehci_hcd 23500 0
nvidia_agp 5724 1
agpgart 23024 1 nvidia_agp
i2c_nforce2 4352 0
i2c_core 15760 1 i2c_nforce2
usbcore 100376 3 ohci_hcd,ehci_hcd
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When I change the BIOS configuration to what udev wants,
BIOS Configuration:
COM1: 3E8/IRQ4
COM2: 2E8/IRQ3
dmesg |grep -C5 8250
| Code: | PCI: Setting latency timer of device 0000:00:04.0 to 64
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
ohci_hcd: 2006 August 04 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
serial8250: ttyS2 at I/O 0x3e8 (irq = 4) is a 16550A
serial8250: ttyS3 at I/O 0x2e8 (irq = 3) is a 16550A
00:0a: ttyS2 at I/O 0x3e8 (irq = 4) is a 16550A
00:0b: ttyS3 at I/O 0x2e8 (irq = 3) is a 16550A
parport: PnPBIOS parport detected.
parport0: PC-style at 0x378 (0x778), irq 7 [PCSPP,TRISTATE,EPP]
8139too Fast Ethernet driver 0.9.28
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ls -l /dev/ttyS*
| Code: | crw-rw---- 1 root uucp 4, 64 May 6 11:09 /dev/ttyS0
crw-rw---- 1 root uucp 4, 65 May 6 11:09 /dev/ttyS1
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Is there a way to get udev create the device files properly? I'd like to have this done before the default runlevel starts so that any services depending on the COM port doesn't fail immediately.
Thanks |
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Kernel & Hardware
