OK, thought I had it but still stuck

[bammbamm808]

For some reason, I can only get scsi emulation working with gentoo-sources. I have tried both vanilla 2.4.19 and 2.4.20 kernels with the same config as the gentoo-sources with no luck. Here's some output:

====================================
***DMESG FROM KERNEL W/WORKING SCSI-EMULATION....

Kernel command line: BOOT_IMAGE=Gentoo-2.4.19 ro root=2103 hdc=ide-scsi hda=ide-scsi
ide_setup: hdc=ide-scsi
ide_setup: hda=ide-scsi

***FURTHER DOWN....

SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Vendor: Model: 50X CD-ROM Rev: 5.3A
Type: CD-ROM ANSI SCSI revision: 02
Vendor: TEAC Model: CD-W516EB Rev: 1.0A
Type: CD-ROM ANSI SCSI revision: 02
Attached scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0
Attached scsi CD-ROM sr1 at scsi0, channel 0, id 1, lun 0
sr0: scsi3-mmc drive: 4x/40x cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.12
sr1: scsi3-mmc drive: 40x/40x writer cd/rw xa/form2 cdda tray

***CDRECORD -SCANBUS OUTPUT....

Cdrecord 1.11a33 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jörg Schilling
Linux sg driver version: 3.1.24
Using libscg version 'schily-0.6'
scsibus0:
cdrecord: Warning: controller returns wrong size for CD capabilities page.
0,0,0 0) ' ' '50X CD-ROM ' '5.3A' Removable CD-ROM
0,1,0 1) 'TEAC ' 'CD-W516EB ' '1.0A' Removable CD-ROM
0,2,0 2) *
0,3,0 3) *
0,4,0 4) *
0,5,0 5) *
0,6,0 6) *
0,7,0 7) *

=======================================
***DMESG FROM KERNEL W/O WORKING SCSI-EMULATION....

Kernel command line: BOOT_IMAGE=19-plain ro root=2103 hdc=ie-scsi hda=ide-scsi

***FURTHER DOWN....

SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices

***CDRECORD -SCANBUS OUTPUT....

Cdrecord 1.11a33 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jörg Schilling
cdrecord: No such file or directory. Cannot open '/dev/pg*'. Cannot open SCSI driver.
cdrecord: For possible targets try 'cdrecord -scanbus'. Make sure you are root.

=====================================
As you can see, for some reason, only my Gentoo-sources kernel is able to get scsi-emulation working. Nothing has changed here except the kernel. I even used the same config for both these and both vanilla 2.4.20/2.4.19 kernels with the result that only the gentoo-2.4.19 kernel works. WTF is going on? I need some help with this please.


EDIT: Removed some of the length from the lines of = to allow for better wrapping. -- kanuslupus
_________________
MSI MAG B550 Tomahawk
Ryzen 3900x
32Gb Samsung B-die (16GB dual rank x2) DDR4 @ 3200MHz, cl14
Geforce RTX 2070S 8GB
Samsung m.2 NVME pcie-3.0
Etc....

[ctford0]

[bammbamm808]

Yes, it is. I solved the problem by removing ide-cd support from the kernel, and changing nothing else. It worked like a charm after that. This goes against my past experience (I've always had ide-cd support in kernel and it always worked until recently), and one version of conventional wisdom (as typified by a oft-referenced thread in these very forums).
_________________
MSI MAG B550 Tomahawk
Ryzen 3900x
32Gb Samsung B-die (16GB dual rank x2) DDR4 @ 3200MHz, cl14
Geforce RTX 2070S 8GB
Samsung m.2 NVME pcie-3.0
Etc....