R7 250X and Kernels 4.0.7 thru 4.1.20

AmigaOne X1000 platform specific issues related to Linux only.

R7 250X and Kernels 4.0.7 thru 4.1.20

Postby jdupuis » Sun May 15, 2016 8:51 pm

Hi Christian,

Performing a 12.04 install with DVD and Kernel 4.0.7 led me to a riddle. I have tested this and determined repeatability. Know that this , at the least, gets Ubuntu 12.04 DVD loaded for an install. My finding using 4.0.7 on CF Card:

1st CFE> ramdisk -addr=0x24000000 -fs-iso atapi0.1:casper/powerpc64/initrd ( after pressing ENTER, hit up arrow to re-display statement and ENTER again, this time no error reading )
2nd CFE> setenv bootargs "root=/dev/ramdisk file-/cdrom/preseed/ubuntu.seed boot=casper - ( hit ENTER this forces verbose ) however, it seems that certain things are not started, but, it avoids the Ubuntu splash screen that locks up booting )
3rd CFE> boot -elf -noints -fatfs cf0:vmlinux-4.0.7

As stated, this method has given me successful and consistent boots with the DVD and at least provides the install capability. I am just puzzled that the Ubuntu splash screen will freeze booting everytime when booting with normal CFE Command line entries.

Booting my Ubuntu install on "sdc1", I have discovered the same thing.

1st CFE> setenv bootargs "root=/dev/sdc1 - ( ENTER ) goes into verbose
2nd CFE> boot -elf -noints -fatfs cf0:vmlinux-3.17 worked! 4.1.20 worked!
Rasterizer graphics only. No SuperTuxKart, glxgears sloow, but, the updates work and this gives a Linux install as a base to get Ubuntu Mate 16.04 installed for those with an R7 250X.

Just wondering why it works like this. I guess is what puzzles me. Just reporting an interesting finding.

Cheers!!

John
C= A500 2 megs RAM with A590 w/40 MB SCSI HD and Workbench 1.3
C= A3000 25 MHz with Workbench 3.1
AmigaOne X1000 4 GB RAM, XFX Radeon HD 6670 1GB GDDR5 GPU and AmigaOS 4.1 FE/Ubuntu 12.04.5 LTS/Ubuntu Mate 16.04 LTS
Sam460ex 2GB DDR2 800 MHz RAM, XFX Radeon HD 5450 2GB GDDR3 GPU, 3114 SATA Raid, ENVY24HT sound card and AmigaOS 4.1 FE
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Re: R7 250X and Kernels 4.0.7 thru 4.1.20

Postby xeno74 » Sun May 15, 2016 9:46 pm

jdupuis wrote:Hi Christian,

Performing a 12.04 install with DVD and Kernel 4.0.7 led me to a riddle. I have tested this and determined repeatability. Know that this , at the least, gets Ubuntu 12.04 DVD loaded for an install. My finding using 4.0.7 on CF Card:

1st CFE> ramdisk -addr=0x24000000 -fs-iso atapi0.1:casper/powerpc64/initrd ( after pressing ENTER, hit up arrow to re-display statement and ENTER again, this time no error reading )
2nd CFE> setenv bootargs "root=/dev/ramdisk file-/cdrom/preseed/ubuntu.seed boot=casper - ( hit ENTER this forces verbose ) however, it seems that certain things are not started, but, it avoids the Ubuntu splash screen that locks up booting )
3rd CFE> boot -elf -noints -fatfs cf0:vmlinux-4.0.7

As stated, this method has given me successful and consistent boots with the DVD and at least provides the install capability. I am just puzzled that the Ubuntu splash screen will freeze booting everytime when booting with normal CFE Command line entries.

Booting my Ubuntu install on "sdc1", I have discovered the same thing.

1st CFE> setenv bootargs "root=/dev/sdc1 - ( ENTER ) goes into verbose
2nd CFE> boot -elf -noints -fatfs cf0:vmlinux-3.17 worked! 4.1.20 worked!
Rasterizer graphics only. No SuperTuxKart, glxgears sloow, but, the updates work and this gives a Linux install as a base to get Ubuntu Mate 16.04 installed for those with an R7 250X.

Just wondering why it works like this. I guess is what puzzles me. Just reporting an interesting finding.

Cheers!!

John


Many thanks for testing and your explanation! :-)
http://www.amigalinux.org
http://www.supertuxkart-amiga.de

Running Linux on AmigaONEs can require some tinkering.
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