Does GRUB2 disable BIOS watchdog, (when in boot menu)?
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- I enabled the watchdog timer in BIOS (150 sec).
- Then, in the boot
options menu I pressed any key in order to avoid automatic selection
of any of the options.
So now the the grub menu is waiting for a selection.
I expected that after the timeout period (150 sec) the computer will reboot. (Which is the what the OS does once loaded, reboots after 150 sec) ---
But what I see is that the boot selection menu stays indefinitely.
How does GRUB2 disable the BIOS watchdog ?
Ubuntu 16.04, GRUB 2.
BIOS: Phoenix SecureCore, version IPC2-3.330.3 x64 build time: 09/03/2014 Intel celeron 2955u
This is critical for our application, since for some reason GRUB freezes occasionally, and I was hoping that a watchdog would solve the problem by rebooting the machine
ubuntu grub2 watchdog
asked Feb 25 at 16:51
Shalom
64
 |Â
show 1 more comment
up vote
0
down vote
favorite
- I enabled the watchdog timer in BIOS (150 sec).
- Then, in the boot
options menu I pressed any key in order to avoid automatic selection
of any of the options.
So now the the grub menu is waiting for a selection.
I expected that after the timeout period (150 sec) the computer will reboot. (Which is the what the OS does once loaded, reboots after 150 sec) ---
But what I see is that the boot selection menu stays indefinitely.
How does GRUB2 disable the BIOS watchdog ?
Ubuntu 16.04, GRUB 2.
BIOS: Phoenix SecureCore, version IPC2-3.330.3 x64 build time: 09/03/2014 Intel celeron 2955u
This is critical for our application, since for some reason GRUB freezes occasionally, and I was hoping that a watchdog would solve the problem by rebooting the machine
ubuntu grub2 watchdog
asked Feb 25 at 16:51
Shalom
64
You would better see the manual of your board to learn about the functionality. We cannot guess how your motherboard vendor implemented a watchdog. This is not a Linux question per se.
– Rui F Ribeiro
Feb 25 at 16:57
@Roi, The question is specifically about GRUB2. I'm contrasting its behavior to Linux OS once loaded (see edit).
– Shalom
Feb 25 at 17:10
I use watchdog technology in Linux, and can say you with a certain degree of confidence the implementation should be fairly specific to your equipment. I advise you adding the brand and model. This is not specific to GRUB2 per se, is more to how your watchdog behaves relating to your BIOS implementation. Do you even know how it is supposed to work?
– Rui F Ribeiro
Feb 25 at 17:13
@Roi, The situation is as follows: I suspect that the system hangs somewhere in the boot loader, before Ubuntu gets a chance to start up - so any watchdog started by the OS wouldn't help. I do see that watchdog is effective in rebooting if not configured properly by the OS. I guess you saying that this might not be at all possible?
– Shalom
Feb 25 at 17:29
What I am saying is that you and I do not know how that watchdog works and what that BIOS option does, and that is not Linux and GRUB governing it for sure, at least not in boot time. Worse yet, we do not even know if it is a functionality compatible with Linux.
– Rui F Ribeiro
Feb 25 at 17:33
 |Â
show 1 more comment
up vote
0
down vote
favorite
up vote
0
down vote
favorite
- I enabled the watchdog timer in BIOS (150 sec).
- Then, in the boot
options menu I pressed any key in order to avoid automatic selection
of any of the options.
So now the the grub menu is waiting for a selection.
I expected that after the timeout period (150 sec) the computer will reboot. (Which is the what the OS does once loaded, reboots after 150 sec) ---
But what I see is that the boot selection menu stays indefinitely.
How does GRUB2 disable the BIOS watchdog ?
Ubuntu 16.04, GRUB 2.
BIOS: Phoenix SecureCore, version IPC2-3.330.3 x64 build time: 09/03/2014 Intel celeron 2955u
This is critical for our application, since for some reason GRUB freezes occasionally, and I was hoping that a watchdog would solve the problem by rebooting the machine
ubuntu grub2 watchdog
asked Feb 25 at 16:51
Shalom
64
- I enabled the watchdog timer in BIOS (150 sec).
- Then, in the boot
options menu I pressed any key in order to avoid automatic selection
of any of the options.
So now the the grub menu is waiting for a selection.
I expected that after the timeout period (150 sec) the computer will reboot. (Which is the what the OS does once loaded, reboots after 150 sec) ---
But what I see is that the boot selection menu stays indefinitely.
How does GRUB2 disable the BIOS watchdog ?
Ubuntu 16.04, GRUB 2.
BIOS: Phoenix SecureCore, version IPC2-3.330.3 x64 build time: 09/03/2014 Intel celeron 2955u
This is critical for our application, since for some reason GRUB freezes occasionally, and I was hoping that a watchdog would solve the problem by rebooting the machine
ubuntu grub2 watchdog
asked Feb 25 at 16:51
Shalom
64
edited Feb 25 at 17:18
asked Feb 25 at 16:51
Shalom
64
asked Feb 25 at 16:51
Shalom
64
asked Feb 25 at 16:51
Shalom
64
64
You would better see the manual of your board to learn about the functionality. We cannot guess how your motherboard vendor implemented a watchdog. This is not a Linux question per se.
– Rui F Ribeiro
Feb 25 at 16:57
@Roi, The question is specifically about GRUB2. I'm contrasting its behavior to Linux OS once loaded (see edit).
– Shalom
Feb 25 at 17:10
I use watchdog technology in Linux, and can say you with a certain degree of confidence the implementation should be fairly specific to your equipment. I advise you adding the brand and model. This is not specific to GRUB2 per se, is more to how your watchdog behaves relating to your BIOS implementation. Do you even know how it is supposed to work?
– Rui F Ribeiro
Feb 25 at 17:13
@Roi, The situation is as follows: I suspect that the system hangs somewhere in the boot loader, before Ubuntu gets a chance to start up - so any watchdog started by the OS wouldn't help. I do see that watchdog is effective in rebooting if not configured properly by the OS. I guess you saying that this might not be at all possible?
– Shalom
Feb 25 at 17:29
What I am saying is that you and I do not know how that watchdog works and what that BIOS option does, and that is not Linux and GRUB governing it for sure, at least not in boot time. Worse yet, we do not even know if it is a functionality compatible with Linux.
– Rui F Ribeiro
Feb 25 at 17:33
 |Â
show 1 more comment
You would better see the manual of your board to learn about the functionality. We cannot guess how your motherboard vendor implemented a watchdog. This is not a Linux question per se.
– Rui F Ribeiro
Feb 25 at 16:57
@Roi, The question is specifically about GRUB2. I'm contrasting its behavior to Linux OS once loaded (see edit).
– Shalom
Feb 25 at 17:10
I use watchdog technology in Linux, and can say you with a certain degree of confidence the implementation should be fairly specific to your equipment. I advise you adding the brand and model. This is not specific to GRUB2 per se, is more to how your watchdog behaves relating to your BIOS implementation. Do you even know how it is supposed to work?
– Rui F Ribeiro
Feb 25 at 17:13
@Roi, The situation is as follows: I suspect that the system hangs somewhere in the boot loader, before Ubuntu gets a chance to start up - so any watchdog started by the OS wouldn't help. I do see that watchdog is effective in rebooting if not configured properly by the OS. I guess you saying that this might not be at all possible?
– Shalom
Feb 25 at 17:29
What I am saying is that you and I do not know how that watchdog works and what that BIOS option does, and that is not Linux and GRUB governing it for sure, at least not in boot time. Worse yet, we do not even know if it is a functionality compatible with Linux.
– Rui F Ribeiro
Feb 25 at 17:33
You would better see the manual of your board to learn about the functionality. We cannot guess how your motherboard vendor implemented a watchdog. This is not a Linux question per se.
– Rui F Ribeiro
Feb 25 at 16:57
You would better see the manual of your board to learn about the functionality. We cannot guess how your motherboard vendor implemented a watchdog. This is not a Linux question per se.
– Rui F Ribeiro
Feb 25 at 16:57
@Roi, The question is specifically about GRUB2. I'm contrasting its behavior to Linux OS once loaded (see edit).
– Shalom
Feb 25 at 17:10
@Roi, The question is specifically about GRUB2. I'm contrasting its behavior to Linux OS once loaded (see edit).
– Shalom
Feb 25 at 17:10
I use watchdog technology in Linux, and can say you with a certain degree of confidence the implementation should be fairly specific to your equipment. I advise you adding the brand and model. This is not specific to GRUB2 per se, is more to how your watchdog behaves relating to your BIOS implementation. Do you even know how it is supposed to work?
– Rui F Ribeiro
Feb 25 at 17:13
I use watchdog technology in Linux, and can say you with a certain degree of confidence the implementation should be fairly specific to your equipment. I advise you adding the brand and model. This is not specific to GRUB2 per se, is more to how your watchdog behaves relating to your BIOS implementation. Do you even know how it is supposed to work?
– Rui F Ribeiro
Feb 25 at 17:13
@Roi, The situation is as follows: I suspect that the system hangs somewhere in the boot loader, before Ubuntu gets a chance to start up - so any watchdog started by the OS wouldn't help. I do see that watchdog is effective in rebooting if not configured properly by the OS. I guess you saying that this might not be at all possible?
– Shalom
Feb 25 at 17:29
@Roi, The situation is as follows: I suspect that the system hangs somewhere in the boot loader, before Ubuntu gets a chance to start up - so any watchdog started by the OS wouldn't help. I do see that watchdog is effective in rebooting if not configured properly by the OS. I guess you saying that this might not be at all possible?
– Shalom
Feb 25 at 17:29
What I am saying is that you and I do not know how that watchdog works and what that BIOS option does, and that is not Linux and GRUB governing it for sure, at least not in boot time. Worse yet, we do not even know if it is a functionality compatible with Linux.
– Rui F Ribeiro
Feb 25 at 17:33
What I am saying is that you and I do not know how that watchdog works and what that BIOS option does, and that is not Linux and GRUB governing it for sure, at least not in boot time. Worse yet, we do not even know if it is a functionality compatible with Linux.
– Rui F Ribeiro
Feb 25 at 17:33
 |Â
show 1 more comment
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You would better see the manual of your board to learn about the functionality. We cannot guess how your motherboard vendor implemented a watchdog. This is not a Linux question per se.
– Rui F Ribeiro
Feb 25 at 16:57
@Roi, The question is specifically about GRUB2. I'm contrasting its behavior to Linux OS once loaded (see edit).
– Shalom
Feb 25 at 17:10
I use watchdog technology in Linux, and can say you with a certain degree of confidence the implementation should be fairly specific to your equipment. I advise you adding the brand and model. This is not specific to GRUB2 per se, is more to how your watchdog behaves relating to your BIOS implementation. Do you even know how it is supposed to work?
– Rui F Ribeiro
Feb 25 at 17:13
@Roi, The situation is as follows: I suspect that the system hangs somewhere in the boot loader, before Ubuntu gets a chance to start up - so any watchdog started by the OS wouldn't help. I do see that watchdog is effective in rebooting if not configured properly by the OS. I guess you saying that this might not be at all possible?
– Shalom
Feb 25 at 17:29
What I am saying is that you and I do not know how that watchdog works and what that BIOS option does, and that is not Linux and GRUB governing it for sure, at least not in boot time. Worse yet, we do not even know if it is a functionality compatible with Linux.
– Rui F Ribeiro
Feb 25 at 17:33