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Re: nasty bug in /usr/sbin/grub-probe

I have working Ultra 5 if it is of any help…..

root@xray:/boot/grub# uname -a
Linux xray 5.10.0-8-sparc64 #1 Debian 5.10.46-4 (2021-08-03) sparc64 GNU/Linux

On Apr 3, 2022, at 8:28 PM, Stan Johnson <userm57@yahoo.com> wrote:

On 4/3/22 11:04 AM, John Paul Adrian Glaubitz wrote:
Hi Stan!

On 4/3/22 16:39, Stan Johnson wrote:
If this problem is expected to occur on an Ultra 5 or an Ultra 30,
please let me know and I'll be happy to help with a git bisect, using a
spare 9 GB disk for the installation.

I think you should see the issue on both the Ultra 5 and Ultra 30.

I wasn't able to get my Ultra 5 working; the video signal kept cycling
on and off for some reason, and the CD drive wasn't seen, though it was
seen well enough to boot the installation and get to the point where it
said no CD drive was found.

But I was able to confirm that the "grub-probe" bug doesn't seem to
affect the Ultra 30.

root@xray:/boot/grub# /sbin/grub-probe --target=drive --device /dev/sda1


There were a few oddities, but only #6 is serious (apparently a libc
bug, not a kernel bug).

1) I see that /dev/sda1 is mounted as /boot, not /boot/grub. So all the
kernels will end up in /dev/sda1. I haven't tested how (or whether) that
will affect kernels for other operating systems (e.g. Gentoo).

2) Please confirm that grub-install never needs to be run. It appears
not to be needed, since update-grub updates /boot/grub/grub.cfg directly.

3) At system boot, when GRUB runs, it complains that it is out of
memory, but it seems to work anyway.

4) During installation, the disk partitioner said "The disk has 562253
cylinders which is greater than the maximum of 65536.", but that error
didn't seem to affect anything.

All 4 of the above have also been witnessed on my machine.

6) In Xfce, a login at the console worked once, but it is now failing
consistently (even after a reboot), with this error message in dmesg:

xfce4-session[3980]: segfault at 0 ip fffff8010263c9b4 (rpc
fffff801020efbb8) sp 000007feff8dc451 error 1 in

I’m using lightdm and it seems to be fine. But support for the graphics card is lacking as explained on other emails to this list.

mgt@xray:~$ inxi -G
Graphics:  Device-1: Advanced Micro Devices [AMD/ATI] RV100 [Radeon 7000 / Radeon VE] driver: radeonfb v: N/A 
           Display: server: X.org 1.20.11 driver: loaded: ati,fbdev unloaded: modesetting,radeon tty: 138x43 
           Message: Advanced graphics data unavailable in console. Try -G --display 

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