PKCS#7 signature not signed with a trusted key problem, pc not booting graphicallyBooting problem with 12.04Problem Dual Booting Ubuntu with Windows 8problem dual-booting Windows with EFI and 2 hard disksUbuntu not booting properly with GTX 970booting problem along with windowsend Kernel panic - not syncing: Out of memory and no killable processesXubuntu 17.10 not booting after package upgrade shim shim-signedSecond USB monitor on laptop and PKCS#7 signature not signed with a trusted keyUbuntu 18.04 Boot hangs at PKCS#7 signature not signed with a trusted keyWhat causes “PKCS#7 signature not signed with a trusted key”
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PKCS#7 signature not signed with a trusted key problem, pc not booting graphically
Booting problem with 12.04Problem Dual Booting Ubuntu with Windows 8problem dual-booting Windows with EFI and 2 hard disksUbuntu not booting properly with GTX 970booting problem along with windowsend Kernel panic - not syncing: Out of memory and no killable processesXubuntu 17.10 not booting after package upgrade shim shim-signedSecond USB monitor on laptop and PKCS#7 signature not signed with a trusted keyUbuntu 18.04 Boot hangs at PKCS#7 signature not signed with a trusted keyWhat causes “PKCS#7 signature not signed with a trusted key”
My pc is not booting graphically because of the above mentioned error, and I'm no genius to run pc through terminal, so please help
boot grub2 kernel
asked Nov 1 '18 at 2:42
Pranaya AdhikariPranaya Adhikari
216
add a comment |
My pc is not booting graphically because of the above mentioned error, and I'm no genius to run pc through terminal, so please help
boot grub2 kernel
asked Nov 1 '18 at 2:42
Pranaya AdhikariPranaya Adhikari
216
Same problem. Anyone willing to help?
– asiniy
Nov 1 '18 at 4:16
add a comment |
My pc is not booting graphically because of the above mentioned error, and I'm no genius to run pc through terminal, so please help
boot grub2 kernel
asked Nov 1 '18 at 2:42
Pranaya AdhikariPranaya Adhikari
216
My pc is not booting graphically because of the above mentioned error, and I'm no genius to run pc through terminal, so please help
boot grub2 kernel
boot grub2 kernel
asked Nov 1 '18 at 2:42
Pranaya AdhikariPranaya Adhikari
216
asked Nov 1 '18 at 2:42
Pranaya AdhikariPranaya Adhikari
216
asked Nov 1 '18 at 2:42
Pranaya AdhikariPranaya Adhikari
216
asked Nov 1 '18 at 2:42
Pranaya AdhikariPranaya Adhikari
216
asked Nov 1 '18 at 2:42
Pranaya AdhikariPranaya Adhikari
216
216
Same problem. Anyone willing to help?
– asiniy
Nov 1 '18 at 4:16
add a comment |
Same problem. Anyone willing to help?
– asiniy
Nov 1 '18 at 4:16
Same problem. Anyone willing to help?
– asiniy
Nov 1 '18 at 4:16
Same problem. Anyone willing to help?
– asiniy
Nov 1 '18 at 4:16
add a comment |
2 Answers
2
active
oldest
votes
If you are a beginner, this is just about the toughest spot you can be in. This will help.
I had this problem today after an update. I could see the XFCE desktop did try to start, but it was failing to launch the display manager (either gdm3 or lightdm failed). End result was Black Screen with that message you saw. I'll be shocked if your problem is not caused by proprietary drivers, probably nvidia.
I felt lucky to get out of this. When the Black Screen of Death happens, I was not able to get a terminal with Alt-Ctrl-F2. Old time Linux skills came in handy.
In my case, it turned out that the nvidia drivers were not signed in the expected way. I found posts about corrections proposed for kernel, but I was happy to just get rid of nvidia drivers so the computer might start. I'll run without them for a while.
Here's what I did to fix. Use power button to restart. As the system is restarting, hit the Esc key over and over. Pay attention, stop hitting Esc as the small menu appears. If you accidentally hit escape there, you'll get bumped to grub menu and that's tough to navigate. I restarted a couple of times to hit Esc just at the right moments. You arrive at a menu with 3 lines. The 2nd line is Advanced Ubuntu Options, which is just choosing kernels or recovery modes. Cursor down to revovery mode, pick that, then another menu. I choose the "root" session. I do have a root password, I hope you do too. If you log in with password, you'll be root.
List all files with nvidia. Prompt will be pound sign.
# dpkg -l | grep nvidia
and then purge those files (whatever name) one by one
# dpkg --pruge ?????
It may refuse because of dependencies, but keep trying.
You probably won't have network access at that point, so apt-get installing things wont work.
answered Nov 20 '18 at 4:16
pauljohn32pauljohn32
2,394924
Unfortunately, in my case, dpkg -l | grep nvidia shows nothing, so, for me, not an invidia problem. Any suggestions for what I should do?
– Tin Man
Feb 15 at 22:21
add a comment |
Thanks to @pauljohn32, I started with this, but found there's maybe a more automated option.
Something that is possible to try:
Boot to recovery mode by holding down left shift or esc while booting.
Go to: * Advanced Boot options
I selected the first ... (recovery mode) listed
At this point the following menu was not rendering correctly, but by using up/down arrows I could still see the options.
I selected: dpkg repair
It took some time to reinstall all packages and it looks as though many issues were resolved.
This fixed my pkcs#7 signature not signed with a trusted key situation. Good luck!
answered 36 mins ago
WilliamsWilliams
1013
New contributor
Williams is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
If you are a beginner, this is just about the toughest spot you can be in. This will help.
I had this problem today after an update. I could see the XFCE desktop did try to start, but it was failing to launch the display manager (either gdm3 or lightdm failed). End result was Black Screen with that message you saw. I'll be shocked if your problem is not caused by proprietary drivers, probably nvidia.
I felt lucky to get out of this. When the Black Screen of Death happens, I was not able to get a terminal with Alt-Ctrl-F2. Old time Linux skills came in handy.
In my case, it turned out that the nvidia drivers were not signed in the expected way. I found posts about corrections proposed for kernel, but I was happy to just get rid of nvidia drivers so the computer might start. I'll run without them for a while.
Here's what I did to fix. Use power button to restart. As the system is restarting, hit the Esc key over and over. Pay attention, stop hitting Esc as the small menu appears. If you accidentally hit escape there, you'll get bumped to grub menu and that's tough to navigate. I restarted a couple of times to hit Esc just at the right moments. You arrive at a menu with 3 lines. The 2nd line is Advanced Ubuntu Options, which is just choosing kernels or recovery modes. Cursor down to revovery mode, pick that, then another menu. I choose the "root" session. I do have a root password, I hope you do too. If you log in with password, you'll be root.
List all files with nvidia. Prompt will be pound sign.
# dpkg -l | grep nvidia
and then purge those files (whatever name) one by one
# dpkg --pruge ?????
It may refuse because of dependencies, but keep trying.
You probably won't have network access at that point, so apt-get installing things wont work.
answered Nov 20 '18 at 4:16
pauljohn32pauljohn32
2,394924
Unfortunately, in my case, dpkg -l | grep nvidia shows nothing, so, for me, not an invidia problem. Any suggestions for what I should do?
– Tin Man
Feb 15 at 22:21
add a comment |
If you are a beginner, this is just about the toughest spot you can be in. This will help.
I had this problem today after an update. I could see the XFCE desktop did try to start, but it was failing to launch the display manager (either gdm3 or lightdm failed). End result was Black Screen with that message you saw. I'll be shocked if your problem is not caused by proprietary drivers, probably nvidia.
I felt lucky to get out of this. When the Black Screen of Death happens, I was not able to get a terminal with Alt-Ctrl-F2. Old time Linux skills came in handy.
In my case, it turned out that the nvidia drivers were not signed in the expected way. I found posts about corrections proposed for kernel, but I was happy to just get rid of nvidia drivers so the computer might start. I'll run without them for a while.
Here's what I did to fix. Use power button to restart. As the system is restarting, hit the Esc key over and over. Pay attention, stop hitting Esc as the small menu appears. If you accidentally hit escape there, you'll get bumped to grub menu and that's tough to navigate. I restarted a couple of times to hit Esc just at the right moments. You arrive at a menu with 3 lines. The 2nd line is Advanced Ubuntu Options, which is just choosing kernels or recovery modes. Cursor down to revovery mode, pick that, then another menu. I choose the "root" session. I do have a root password, I hope you do too. If you log in with password, you'll be root.
List all files with nvidia. Prompt will be pound sign.
# dpkg -l | grep nvidia
and then purge those files (whatever name) one by one
# dpkg --pruge ?????
It may refuse because of dependencies, but keep trying.
You probably won't have network access at that point, so apt-get installing things wont work.
answered Nov 20 '18 at 4:16
pauljohn32pauljohn32
2,394924
Unfortunately, in my case, dpkg -l | grep nvidia shows nothing, so, for me, not an invidia problem. Any suggestions for what I should do?
– Tin Man
Feb 15 at 22:21
add a comment |
If you are a beginner, this is just about the toughest spot you can be in. This will help.
I had this problem today after an update. I could see the XFCE desktop did try to start, but it was failing to launch the display manager (either gdm3 or lightdm failed). End result was Black Screen with that message you saw. I'll be shocked if your problem is not caused by proprietary drivers, probably nvidia.
I felt lucky to get out of this. When the Black Screen of Death happens, I was not able to get a terminal with Alt-Ctrl-F2. Old time Linux skills came in handy.
In my case, it turned out that the nvidia drivers were not signed in the expected way. I found posts about corrections proposed for kernel, but I was happy to just get rid of nvidia drivers so the computer might start. I'll run without them for a while.
Here's what I did to fix. Use power button to restart. As the system is restarting, hit the Esc key over and over. Pay attention, stop hitting Esc as the small menu appears. If you accidentally hit escape there, you'll get bumped to grub menu and that's tough to navigate. I restarted a couple of times to hit Esc just at the right moments. You arrive at a menu with 3 lines. The 2nd line is Advanced Ubuntu Options, which is just choosing kernels or recovery modes. Cursor down to revovery mode, pick that, then another menu. I choose the "root" session. I do have a root password, I hope you do too. If you log in with password, you'll be root.
List all files with nvidia. Prompt will be pound sign.
# dpkg -l | grep nvidia
and then purge those files (whatever name) one by one
# dpkg --pruge ?????
It may refuse because of dependencies, but keep trying.
You probably won't have network access at that point, so apt-get installing things wont work.
answered Nov 20 '18 at 4:16
pauljohn32pauljohn32
2,394924
If you are a beginner, this is just about the toughest spot you can be in. This will help.
I had this problem today after an update. I could see the XFCE desktop did try to start, but it was failing to launch the display manager (either gdm3 or lightdm failed). End result was Black Screen with that message you saw. I'll be shocked if your problem is not caused by proprietary drivers, probably nvidia.
I felt lucky to get out of this. When the Black Screen of Death happens, I was not able to get a terminal with Alt-Ctrl-F2. Old time Linux skills came in handy.
In my case, it turned out that the nvidia drivers were not signed in the expected way. I found posts about corrections proposed for kernel, but I was happy to just get rid of nvidia drivers so the computer might start. I'll run without them for a while.
Here's what I did to fix. Use power button to restart. As the system is restarting, hit the Esc key over and over. Pay attention, stop hitting Esc as the small menu appears. If you accidentally hit escape there, you'll get bumped to grub menu and that's tough to navigate. I restarted a couple of times to hit Esc just at the right moments. You arrive at a menu with 3 lines. The 2nd line is Advanced Ubuntu Options, which is just choosing kernels or recovery modes. Cursor down to revovery mode, pick that, then another menu. I choose the "root" session. I do have a root password, I hope you do too. If you log in with password, you'll be root.
List all files with nvidia. Prompt will be pound sign.
# dpkg -l | grep nvidia
and then purge those files (whatever name) one by one
# dpkg --pruge ?????
It may refuse because of dependencies, but keep trying.
You probably won't have network access at that point, so apt-get installing things wont work.
answered Nov 20 '18 at 4:16
pauljohn32pauljohn32
2,394924
answered Nov 20 '18 at 4:16
pauljohn32pauljohn32
2,394924
answered Nov 20 '18 at 4:16
pauljohn32pauljohn32
2,394924
answered Nov 20 '18 at 4:16
pauljohn32pauljohn32
2,394924
2,394924
Unfortunately, in my case, dpkg -l | grep nvidia shows nothing, so, for me, not an invidia problem. Any suggestions for what I should do?
– Tin Man
Feb 15 at 22:21
add a comment |
Unfortunately, in my case, dpkg -l | grep nvidia shows nothing, so, for me, not an invidia problem. Any suggestions for what I should do?
– Tin Man
Feb 15 at 22:21
Unfortunately, in my case, dpkg -l | grep nvidia shows nothing, so, for me, not an invidia problem. Any suggestions for what I should do?
– Tin Man
Feb 15 at 22:21
Unfortunately, in my case, dpkg -l | grep nvidia shows nothing, so, for me, not an invidia problem. Any suggestions for what I should do?
– Tin Man
Feb 15 at 22:21
add a comment |
Thanks to @pauljohn32, I started with this, but found there's maybe a more automated option.
Something that is possible to try:
Boot to recovery mode by holding down left shift or esc while booting.
Go to: * Advanced Boot options
I selected the first ... (recovery mode) listed
At this point the following menu was not rendering correctly, but by using up/down arrows I could still see the options.
I selected: dpkg repair
It took some time to reinstall all packages and it looks as though many issues were resolved.
This fixed my pkcs#7 signature not signed with a trusted key situation. Good luck!
answered 36 mins ago
WilliamsWilliams
1013
New contributor
Williams is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
Thanks to @pauljohn32, I started with this, but found there's maybe a more automated option.
Something that is possible to try:
Boot to recovery mode by holding down left shift or esc while booting.
Go to: * Advanced Boot options
I selected the first ... (recovery mode) listed
At this point the following menu was not rendering correctly, but by using up/down arrows I could still see the options.
I selected: dpkg repair
It took some time to reinstall all packages and it looks as though many issues were resolved.
This fixed my pkcs#7 signature not signed with a trusted key situation. Good luck!
answered 36 mins ago
WilliamsWilliams
1013
New contributor
Williams is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
Thanks to @pauljohn32, I started with this, but found there's maybe a more automated option.
Something that is possible to try:
Boot to recovery mode by holding down left shift or esc while booting.
Go to: * Advanced Boot options
I selected the first ... (recovery mode) listed
At this point the following menu was not rendering correctly, but by using up/down arrows I could still see the options.
I selected: dpkg repair
It took some time to reinstall all packages and it looks as though many issues were resolved.
This fixed my pkcs#7 signature not signed with a trusted key situation. Good luck!
answered 36 mins ago
WilliamsWilliams
1013
New contributor
Williams is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Thanks to @pauljohn32, I started with this, but found there's maybe a more automated option.
Something that is possible to try:
Boot to recovery mode by holding down left shift or esc while booting.
Go to: * Advanced Boot options
I selected the first ... (recovery mode) listed
At this point the following menu was not rendering correctly, but by using up/down arrows I could still see the options.
I selected: dpkg repair
It took some time to reinstall all packages and it looks as though many issues were resolved.
This fixed my pkcs#7 signature not signed with a trusted key situation. Good luck!
answered 36 mins ago
WilliamsWilliams
1013
New contributor
Williams is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 36 mins ago
WilliamsWilliams
1013
New contributor
Williams is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 36 mins ago
WilliamsWilliams
1013
answered 36 mins ago
WilliamsWilliams
1013
1013
New contributor
Williams is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Williams is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Williams is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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Same problem. Anyone willing to help?
– asiniy
Nov 1 '18 at 4:16