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Missing /dev/cdrom on my laptop (HP 6715b)
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sir83
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Joined: 26 May 2009
Posts: 8
PostPosted: Thu Jul 23, 2009 5:16 pm    Post subject: Missing /dev/cdrom on my laptop (HP 6715b) Reply with quote
Hi,

I've tried searching around for a solution, but I haven't found one that works.

I have vista on another partition, it works there.
I've tried to modify the kernel while following some guides, but no luck.

Shoudn't the cdrom apear automatically in the /dev/ folder?
I need help! :?

uname -a :
Linux sirlaptop 2.6.28-gentoo-r5 #4 SMP Mon Jun 15 20:22:52 CEST 2009 x86_64 AMD Turion(tm) 64 X2 Mobile Technology TL-60 AuthenticAMD GNU/Linux

I can post more info if needed.

Thanks!
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dopow
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PostPosted: Thu Jul 23, 2009 5:26 pm    Post subject: Reply with quote
I think your model laptop has a sata dvd drive, so your dvd drive might be /dev/sr0.
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sir83
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PostPosted: Thu Jul 23, 2009 5:36 pm    Post subject: Reply with quote
dopow wrote:
I think your model laptop has a sata dvd drive, so your dvd drive might be /dev/sr0.


Here is the output from 'ls -a1 /dev/':
.
..
.udev
XOR
audio
autofs
bsg
bus
console
core
cpu
cpu_dma_latency
device-mapper
disk
dri
dsp
fd
full
fuse
hpet
hw_random
hwrng
initctl
input
kmem
kmsg
log
loop
loop0
loop1
loop2
loop3
loop4
loop5
loop6
loop7
mapper
md
md0
mem
mixer
network_latency
network_throughput
null
nvram
oldmem
port
ppp
ptmx
pts
ram
ram0
ram1
ram10
ram11
ram12
ram13
ram14
ram15
ram2
ram3
ram4
ram5
ram6
ram7
ram8
ram9
ramdisk
random
rd
root
rtc
rtc0
sda
sda1
sda2
sda4
sequencer
sequencer2
sg0
shm
snapshot
snd
stderr
stdin
stdout
tty
tty0
tty1
tty10
tty11
tty12
tty13
tty14
tty15
tty16
tty17
tty18
tty19
tty2
tty20
tty21
tty22
tty23
tty24
tty25
tty26
tty27
tty28
tty29
tty3
tty30
tty31
tty32
tty33
tty34
tty35
tty36
tty37
tty38
tty39
tty4
tty40
tty41
tty42
tty43
tty44
tty45
tty46
tty47
tty48
tty49
tty5
tty50
tty51
tty52
tty53
tty54
tty55
tty56
tty57
tty58
tty59
tty6
tty60
tty61
tty62
tty63
tty7
tty8
tty9
ttyS0
ttyS1
ttyS2
ttyS3
urandom
usbdev1.1_ep00
usbdev1.1_ep81
usbdev2.1_ep00
usbdev2.1_ep81
usbdev2.2_ep00
usbdev2.2_ep02
usbdev2.2_ep03
usbdev2.2_ep04
usbdev2.2_ep81
usbdev2.2_ep82
usbdev2.2_ep83
usbdev2.2_ep84
usbdev3.1_ep00
usbdev3.1_ep81
usbdev4.1_ep00
usbdev4.1_ep81
usbdev4.2_ep00
usbdev4.2_ep02
usbdev4.2_ep81
usbdev5.1_ep00
usbdev5.1_ep81
usbdev6.1_ep00
usbdev6.1_ep81
usbmon0
usbmon1
usbmon2
usbmon3
usbmon4
usbmon5
usbmon6
vcs
vcs1
vcs12
vcs2
vcs3
vcs4
vcs5
vcs6
vcs7
vcsa
vcsa1
vcsa12
vcsa2
vcsa3
vcsa4
vcsa5
vcsa6
vcsa7
zero
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sir83
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PostPosted: Thu Jul 23, 2009 5:44 pm    Post subject: Reply with quote
This is from dmesg:

[ 0.849171] Loading iSCSI transport class v2.0-870.
[ 0.849647] Driver 'sd' needs updating - please use bus_type methods
[ 0.849787] Driver 'sr' needs updating - please use bus_type methods
[ 0.850017] ahci 0000:00:12.0: version 3.0
[ 0.850034] ahci 0000:00:12.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 0.850149] ahci 0000:00:12.0: controller can't do 64bit DMA, forcing 32bit
[ 0.850313] ahci 0000:00:12.0: AHCI 0001.0100 32 slots 4 ports 3 Gbps 0x1 impl SATA mode
[ 0.850445] ahci 0000:00:12.0: flags: ncq sntf ilck pm led clo pio slum part
[ 0.850709] scsi0 : ahci
[ 0.851045] scsi1 : ahci
[ 0.851292] scsi2 : ahci
[ 0.851499] scsi3 : ahci
[ 0.851729] ata1: SATA max UDMA/133 abar m1024@0xd0609000 port 0xd0609100 irq 16
[ 0.851857] ata2: DUMMY
[ 0.851936] ata3: DUMMY
[ 0.852018] ata4: DUMMY
[ 1.157066] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 1.157968] ata1.00: ATA-7: ST9160821AS, 3.BHE, max UDMA/100
[ 1.158052] ata1.00: 312581808 sectors, multi 16: LBA48
[ 1.158152] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
[ 1.159230] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
[ 1.159324] ata1.00: configured for UDMA/100
[ 1.170183] scsi 0:0:0:0: Direct-Access ATA ST9160821AS 3.BH PQ: 0 ANSI: 5
[ 1.170551] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors: (160 GB/149 GiB)
[ 1.170693] sd 0:0:0:0: [sda] Write Protect is off
[ 1.170775] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 1.170801] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 1.171004] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors: (160 GB/149 GiB)
[ 1.171144] sd 0:0:0:0: [sda] Write Protect is off
[ 1.171234] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 1.171270] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 1.171400] sda: sda1 sda2 sda4
[ 1.194601] sd 0:0:0:0: [sda] Attached SCSI disk
[ 1.194828] sd 0:0:0:0: Attached scsi generic sg0 type 0
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dopow
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PostPosted: Thu Jul 23, 2009 5:49 pm    Post subject: Reply with quote
Can you please post your kernel config (usually /usr/src/linux/.config). Please use pastebin, and then post the link.
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01allein
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Joined: 09 Jun 2009
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Location: AUSTRALIA
PostPosted: Thu Jul 23, 2009 6:03 pm    Post subject: Reply with quote
sir83 wrote:
This is from dmesg:

[ 0.849171] Loading iSCSI transport class v2.0-870.
[ 0.849647] Driver 'sd' needs updating - please use bus_type methods
[ 0.849787] Driver 'sr' needs updating - please use bus_type methods
[ 0.850017] ahci 0000:00:12.0: version 3.0
[ 0.850034] ahci 0000:00:12.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 0.850149] ahci 0000:00:12.0: controller can't do 64bit DMA, forcing 32bit
[ 0.850313] ahci 0000:00:12.0: AHCI 0001.0100 32 slots 4 ports 3 Gbps 0x1 impl SATA mode
[ 0.850445] ahci 0000:00:12.0: flags: ncq sntf ilck pm led clo pio slum part
[ 0.850709] scsi0 : ahci
[ 0.851045] scsi1 : ahci
[ 0.851292] scsi2 : ahci
[ 0.851499] scsi3 : ahci
[ 0.851729] ata1: SATA max UDMA/133 abar m1024@0xd0609000 port 0xd0609100 irq 16
[ 0.851857] ata2: DUMMY
[ 0.851936] ata3: DUMMY
[ 0.852018] ata4: DUMMY
[ 1.157066] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 1.157968] ata1.00: ATA-7: ST9160821AS, 3.BHE, max UDMA/100
[ 1.158052] ata1.00: 312581808 sectors, multi 16: LBA48
[ 1.158152] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
[ 1.159230] ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
[ 1.159324] ata1.00: configured for UDMA/100
[ 1.170183] scsi 0:0:0:0: Direct-Access ATA ST9160821AS 3.BH PQ: 0 ANSI: 5
[ 1.170551] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors: (160 GB/149 GiB)
[ 1.170693] sd 0:0:0:0: [sda] Write Protect is off
[ 1.170775] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 1.170801] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 1.171004] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors: (160 GB/149 GiB)
[ 1.171144] sd 0:0:0:0: [sda] Write Protect is off
[ 1.171234] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 1.171270] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 1.171400] sda: sda1 sda2 sda4
[ 1.194601] sd 0:0:0:0: [sda] Attached SCSI disk
[ 1.194828] sd 0:0:0:0: Attached scsi generic sg0 type 0


I had exactly the same problem, and the only solution to my problem wat to use genkernel.

Why, because every time I recompiled, I pretended that I had selected the right driver(s) for my cdrom, but It wasnt true, then I had to use genkernel.
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sir83
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PostPosted: Thu Jul 23, 2009 6:04 pm    Post subject: Reply with quote
dopow wrote:
Can you please post your kernel config (usually /usr/src/linux/.config). Please use pastebin, and then post the link.

Here we go: http://pastebin.com/m6c959634

I tried to mount sg0 like this: mount -t iso9660 -o ro /dev/sg0 /mnt/cdrom/'
mount: /dev/sg0 is not a block device
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dopow
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PostPosted: Thu Jul 23, 2009 6:49 pm    Post subject: Reply with quote
How do you have your BIOS configured to work with the drives? AHCI or IDE emulation? AHCI is probably the way to go on your system.
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sir83
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PostPosted: Thu Jul 23, 2009 7:00 pm    Post subject: Reply with quote
dopow wrote:
How do you have your BIOS configured to work with the drives? AHCI or IDE emulation? AHCI is probably the way to go on your system.

It's not possible to do much changes in this HP-bios. Everything is auto detect. I can activate/deactivate some functions like fingerprintreader, bluetooth, wlan etc. and its possible to change the boot order.
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sir83
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PostPosted: Thu Jul 23, 2009 7:04 pm    Post subject: Reply with quote
01allein wrote:


I had exactly the same problem, and the only solution to my problem wat to use genkernel.

Why, because every time I recompiled, I pretended that I had selected the right driver(s) for my cdrom, but It wasnt true, then I had to use genkernel.


Thanks for the tip, I'm now emerging genkernel.
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