I have solved my issue by changing the Host EFI Exit type:

REFIND_EFI for Windows images
SANBOOT for Ubuntu/Debian images

Xavier

@pcnr I noticed this issue so many years a go. It may be issues refering undionly.kpxe file. You can find some solutions from this forum about this. In my case I did following:

Make a backup of /tftpboot/undionly.kpxe to undionly.kxpe.bak; Copied /tftpboot/undionly.kkpxe to undionly.kpxe.

So at next time, this stuck problem was solved.

Okay - So what killled this installation was the fact a 1.5.9 csv load was imported into my 1.5.10.1698 FOG - this killed a bunch of features and I eded up having to reinstall.

I’m also interested in knowing if a solution exists.

@rodluz yes, directly from 1.5.10.1754 to 1.5.10.1763 when I saw the prompt in the FOG gui that I’m not using the latest version - it was up to date before.

in 1.5.10.1754 recapture didn’t added up, just updated the image size to the latest one.

I have just discovered that somehow all the MACs are changing sometime after the final successful DHCP lease.
My DHCP server is set to only answer to specific MACs, so if I add in the “new” one, it works.
No idea how this is happening, I’ve never seen MACs just suddenly change like this.
It sucks that now I have another MAC per server to deal with, but at least it’s working.

@Greg-Plamondon I’m going to try delving into this but I’ve been very busy with other things and just haven’t gotten around.

I do appreciate the patience and assistance.

The changes you were doing that fixed the problem, please implement them again and you should be back to functional

Once that is done, do you mind doing a diff between that file and the relevant file in the git repository side:

Files I think you changed were under: <path>/<to>/<installer>/packages/service/<servicename>/<servicefile>

I’m not seeing any issues on my test systems.

not really sure why it isn’t working either.

I believe you were editing the files in /opt/fog/service/<servicename>/<servicefile>

So you would do:

diff -u <path>/<to>/<installer>/packages/service/<servicename>/<servicefile> /opt/fog/service/<servicename>/<servicefile>

@Greg-Plamondon
Hi,

we got a dhcp server. The computer got network, the path to the efi file is connected.
I have no access to the dhcp settings that i could set the next-server or anything else.
But i think the efi file maybe is corrupt? i have tried to edit the efi file, but then the boot stick does not work anymore.

@rodluz 0f341e2a-1996-4ec7-91ac-4269fe20a31c-image.png

I’ve updated the iPXE on my proxmox server, still hangs on this message. Other VMs work fine, as they did with the older iPXE version.

@Tom-Elliott apologies for the delay but here is what I see in the error log when this occurs:

For context the 'Client IP Detected as <IP ADDRESS> is a small modification to the Subnet Groups plugin which I log the IP of the client checking in, this is working as intended.

The ‘PHP Fatal error’ is what I only see when we have the chain loading error.

I can confirm this is working on: 1.5.10.1734 as I have rolled back any sites to this version and have seen no issues.

[Mon Feb 23 15:07:55.208763 2026] [proxy_fcgi:error] [pid 501804] [client 10.9.209.159:33595] AH01071: Got error 'PHP message: SubnetGroup Hook: Client IP Detected as 10.9.209.159; PHP message: PHP Fatal error: Uncaught ValueError: min(): Argument #1 ($value) must contain at least one element in /var/www/fog/lib/fog/image.class.php:496\nStack trace:\n#0 /var/www/fog/lib/fog/image.class.php(496): min()\n#1 /var/www/fog/lib/fog/image.class.php(389): Image->getPrimaryGroup()\n#2 /var/www/fog/lib/fog/bootmenu.class.php(1472): Image->getStorageGroup()\n#3 /var/www/fog/lib/fog/bootmenu.class.php(469): BootMenu->getTasking()\n#4 /var/www/fog/service/ipxe/boot.php(52): BootMenu->__construct()\n#5 {main}\n thrown in /var/www/fog/lib/fog/image.class.php on line 496' [Mon Feb 23 15:08:27.815241 2026] [proxy_fcgi:error] [pid 501806] [client 10.9.209.159:1025] AH01071: Got error 'PHP message: SubnetGroup Hook: Client IP Detected as 10.9.209.159; PHP message: PHP Fatal error: Uncaught ValueError: min(): Argument #1 ($value) must contain at least one element in /var/www/fog/lib/fog/image.class.php:496\nStack trace:\n#0 /var/www/fog/lib/fog/image.class.php(496): min()\n#1 /var/www/fog/lib/fog/image.class.php(389): Image->getPrimaryGroup()\n#2 /var/www/fog/lib/fog/bootmenu.class.php(1472): Image->getStorageGroup()\n#3 /var/www/fog/lib/fog/bootmenu.class.php(469): BootMenu->getTasking()\n#4 /var/www/fog/service/ipxe/boot.php(52): BootMenu->__construct()\n#5 {main}\n thrown in /var/www/fog/lib/fog/image.class.php on line 496' [Mon Feb 23 15:09:00.456158 2026] [proxy_fcgi:error] [pid 501802] [client 10.9.209.159:1555] AH01071: Got error 'PHP message: SubnetGroup Hook: Client IP Detected as 10.9.209.159; PHP message: PHP Fatal error: Uncaught ValueError: min(): Argument #1 ($value) must contain at least one element in /var/www/fog/lib/fog/image.class.php:496\nStack trace:\n#0 /var/www/fog/lib/fog/image.class.php(496): min()\n#1 /var/www/fog/lib/fog/image.class.php(389): Image->getPrimaryGroup()\n#2 /var/www/fog/lib/fog/bootmenu.class.php(1472): Image->getStorageGroup()\n#3 /var/www/fog/lib/fog/bootmenu.class.php(469): BootMenu->getTasking()\n#4 /var/www/fog/service/ipxe/boot.php(52): BootMenu->__construct()\n#5 {main}\n thrown in /var/www/fog/lib/fog/image.class.php on line 496' [Mon Feb 23 15:09:33.088040 2026] [proxy_fcgi:error] [pid 501802] [client 10.9.209.159:6935] AH01071: Got error 'PHP message: SubnetGroup Hook: Client IP Detected as 10.9.209.159; PHP message: PHP Fatal error: Uncaught ValueError: min(): Argument #1 ($value) must contain at least one element in /var/www/fog/lib/fog/image.class.php:496\nStack trace:\n#0 /var/www/fog/lib/fog/image.class.php(496): min()\n#1 /var/www/fog/lib/fog/image.class.php(389): Image->getPrimaryGroup()\n#2 /var/www/fog/lib/fog/bootmenu.class.php(1472): Image->getStorageGroup()\n#3 /var/www/fog/lib/fog/bootmenu.class.php(469): BootMenu->getTasking()\n#4 /var/www/fog/service/ipxe/boot.php(52): BootMenu->__construct()\n#5 {main}\n thrown in /var/www/fog/lib/fog/image.class.php on line 496' [Mon Feb 23 15:10:05.672334 2026] [proxy_fcgi:error] [pid 501803] [client 10.9.209.159:16900] AH01071: Got error 'PHP message: SubnetGroup Hook: Client IP Detected as 10.9.209.159; PHP message: PHP Fatal error: Uncaught ValueError: min(): Argument #1 ($value) must contain at least one element in /var/www/fog/lib/fog/image.class.php:496\nStack trace:\n#0 /var/www/fog/lib/fog/image.class.php(496): min()\n#1 /var/www/fog/lib/fog/image.class.php(389): Image->getPrimaryGroup()\n#2 /var/www/fog/lib/fog/bootmenu.class.php(1472): Image->getStorageGroup()\n#3 /var/www/fog/lib/fog/bootmenu.class.php(469): BootMenu->getTasking()\n#4 /var/www/fog/service/ipxe/boot.php(52): BootMenu->__construct()\n#5 {main}\n thrown in /var/www/fog/lib/fog/image.class.php on line 496' [Mon Feb 23 15:10:38.336356 2026] [proxy_fcgi:error] [pid 571479] [client 10.9.209.159:43335] AH01071: Got error 'PHP message: SubnetGroup Hook: Client IP Detected as 10.9.209.159; PHP message: PHP Fatal error: Uncaught ValueError: min(): Argument #1 ($value) must contain at least one element in /var/www/fog/lib/fog/image.class.php:496\nStack trace:\n#0 /var/www/fog/lib/fog/image.class.php(496): min()\n#1 /var/www/fog/lib/fog/image.class.php(389): Image->getPrimaryGroup()\n#2 /var/www/fog/lib/fog/bootmenu.class.php(1472): Image->getStorageGroup()\n#3 /var/www/fog/lib/fog/bootmenu.class.php(469): BootMenu->getTasking()\n#4 /var/www/fog/service/ipxe/boot.php(52): BootMenu->__construct()\n#5 {main}\n thrown in /var/www/fog/lib/fog/image.class.php on line 496' [Mon Feb 23 15:11:10.976801 2026] [proxy_fcgi:error] [pid 501803] [client 10.9.209.159:36391] AH01071: Got error 'PHP message: SubnetGroup Hook: Client IP Detected as 10.9.209.159; PHP message: PHP Fatal error: Uncaught ValueError: min(): Argument #1 ($value) must contain at least one element in /var/www/fog/lib/fog/image.class.php:496\nStack trace:\n#0 /var/www/fog/lib/fog/image.class.php(496): min()\n#1 /var/www/fog/lib/fog/image.class.php(389): Image->getPrimaryGroup()\n#2 /var/www/fog/lib/fog/bootmenu.class.php(1472): Image->getStorageGroup()\n#3 /var/www/fog/lib/fog/bootmenu.class.php(469): BootMenu->getTasking()\n#4 /var/www/fog/service/ipxe/boot.php(52): BootMenu->__construct()\n#5 {main}\n thrown in /var/www/fog/lib/fog/image.class.php on line 496'```

@Tom-Elliott

So f144ad5 is the last working commit. In case anyone else have the same problem, this is my script to grab it and modify so it works fine with EFI keyboard in some PCs as discussed here: https://forums.fogproject.org/topic/17870/fog-ipxe-menu-no-input. It also removes neverssl.com site because it’s down now so script hangs on checking internet connection. Don’t mind main sed part, it’s probably overcomplicated since I used ChatGPT for it, but it works fine so who cares 😉

#!/bin/bash # Checkout last working FOG project commit cd git git clone https://github.com/FOGProject/fogproject.git cd fogproject git checkout f144ad5a30bdab23be4d207b471ca80057e367fd # Modify functions.sh to remove non working neverssl.com site cd ~/git/fogproject/lib/common sed -i 's+http_sites=("neverssl.com" "httpbin.org")+http_sites=("httpbin.org")+g' functions.sh # Modify buildipxe.sh to grab last working ipxe commit and fix EFI USB drivers cd ~/git/fogproject/utils/FOGiPXE cat > transform_buildipxe.sed <<'SED' /^[[:space:]]*git pull$/a\ git checkout 6cccb3bdc00359068c07125258d71ce24db5118a /^ cd \${BASE}\/ipxe\/src\/$/c\ cd \${BASE}/ipxe/\ git checkout 6cccb3bdc00359068c07125258d71ce24db5118a\ cd \${BASE}/ipxe/src/ /^ cd \${BASE}\/ipxe-efi\/src\/$/c\ cd \${BASE}/ipxe-efi/\ git checkout 6cccb3bdc00359068c07125258d71ce24db5118a\ cd \${BASE}/ipxe-efi/src/ /^sed -i 's+#define[[:space:]]*USB_HCD_USBIO+\/\/\#define[[:space:]]*USB_HCD_USBIO+g' config\/usb\.h$/c\ sed -i 's+#define<----->USB_HCD_USBIO+//#define>USB_HCD_USBIO+g' config/usb.h /^sed -i 's+\/\/\#define[[:space:]]*USB_HCD_USBIO+\#define[[:space:]]*USB_HCD_USBIO+g' config\/usb\.h$/, /^sed -i 's+\/\/\#undef[[:space:]]*USB_EFI+\#undef[[:space:]]*USB_EFI+g' config\/usb\.h$ #sed -i 's+//#define\tUSB_HCD_USBIO+#define\tUSB_HCD_USBIO+g' config/usb.h\ #sed -i 's+//#undef\tUSB_KEYBOARD+#define\tUSB_KEYBOARD+g' config/usb.h\ #sed -i 's+//#undef\tUSB_EFI+#undef\tUSB_EFI+g' config/usb.h\ sed -i 's+//#define+#define+g' config/usb.h\ sed -i 's+#define USB_CMD+//#define USB_CMD+g' config/general.h SED sed -i -f transform_buildipxe.sed buildipxe.sh rm -f transform_buildipxe.sed # Start FOG install/update cd ~/git/fogproject/bin ./installfog.sh