# Ubuntu 18.04 shows a black screen after boot **URL:** \ **Category:** Technical Help\ **Created:** [September 6, 2018, 4:31pm UTC](https://deeptalk.lambda.ai/t/ubuntu-18-04-shows-a-black-screen-after-boot/485 "2018-09-06T16:31:44Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![aminvision](https://avatars.discourse-cdn.com/v4/letter/a/c57346/32.png) [@aminvision](https://deeptalk.lambda.ai/u/aminvision)\ **Post date:** [September 6, 2018, 4:31pm UTC](https://deeptalk.lambda.ai/t/ubuntu-18-04-shows-a-black-screen-after-boot/485/1 "2018-09-06T16:31:44Z")
I have a Lambda Quad machine, it was installed with Ubuntu 16.04, I tried to install ubuntu 18.04. however, after installation, and system boot, it just shows a black screen. ---
**Author:** ![sabalaba](https://sea1.discourse-cdn.com/flex019/user_avatar/deeptalk.lambda.ai/sabalaba/32/4_2.png) [@sabalaba](https://deeptalk.lambda.ai/u/sabalaba)\ **Post date:** [September 7, 2018, 6:21pm UTC](https://deeptalk.lambda.ai/t/ubuntu-18-04-shows-a-black-screen-after-boot/485/2 "2018-09-07T18:21:38Z")
Hi Aminvision, Can you try the following? When you get to the GRUB boot loader (it looks like this): ![grub-bootloader](https://us1.discourse-cdn.com/flex019/uploads/deeptalk/original/1X/9cdc010e79f1387f05862215e088a70c60c67c26.jpg) Press `e` and then add this to the end of the `linux` line: `nouveau.modeset=0` Then hit `F10` key to boot into the Ubuntu system. You can then install Lambda Stack like so: ```auto LAMBDA_REPO=$(mktemp) && \ wget -O${LAMBDA_REPO} https://lambdalabs.com/static/misc/lambda-stack-repo.deb && \ sudo dpkg -i ${LAMBDA_REPO} && rm -f ${LAMBDA_REPO} && \ sudo apt-get update && sudo apt-get install -y lambda-stack-cuda ``` ---
**Author:** ![Stjerp](https://avatars.discourse-cdn.com/v4/letter/s/91b2a8/32.png) [@Stjerp](https://deeptalk.lambda.ai/u/Stjerp)\ **Post date:** [July 10, 2019, 11:17am UTC](https://deeptalk.lambda.ai/t/ubuntu-18-04-shows-a-black-screen-after-boot/485/3 "2019-07-10T11:17:06Z")
This does not work at all! It solves nothing! ---
**Author:** ![japos](https://avatars.discourse-cdn.com/v4/letter/j/ea666f/32.png) [@japos](https://deeptalk.lambda.ai/u/japos)\ **Post date:** [January 5, 2020, 2:22am UTC](https://deeptalk.lambda.ai/t/ubuntu-18-04-shows-a-black-screen-after-boot/485/4 "2020-01-05T02:22:45Z")
I have exactly the same problem, and I did your suggestions, unfortunately, it the problem remains. ---
**Author:** ![solarflarefx](https://avatars.discourse-cdn.com/v4/letter/s/898d66/32.png) [@solarflarefx](https://deeptalk.lambda.ai/u/solarflarefx)\ **Post date:** [November 2, 2020, 4:51pm UTC](https://deeptalk.lambda.ai/t/ubuntu-18-04-shows-a-black-screen-after-boot/485/5 "2020-11-02T16:51:25Z")
@japos and @aminvision Were either of you able to ultimately solve your problem? ---
**Author:** ![dinesh](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@dinesh](https://deeptalk.lambda.ai/u/dinesh)\ **Post date:** [November 7, 2020, 10:40pm UTC](https://deeptalk.lambda.ai/t/ubuntu-18-04-shows-a-black-screen-after-boot/485/6 "2020-11-07T22:40:10Z")
I got itnto the same problem. When I tried updating the grub, I got into different set of error, which starts with PKCS#7 Signature not signed witha trusted key and ends with EDAC Sbridge: Failed to register deivce with error -19. All this happened after I tried to upgrade the OS, Ubuntu 18.04. Any help to recover would be appreciated. ---
**Author:** ![sabalaba](https://sea1.discourse-cdn.com/flex019/user_avatar/deeptalk.lambda.ai/sabalaba/32/4_2.png) [@sabalaba](https://deeptalk.lambda.ai/u/sabalaba)\ **Post date:** [November 13, 2020, 5:43pm UTC](https://deeptalk.lambda.ai/t/ubuntu-18-04-shows-a-black-screen-after-boot/485/7 "2020-11-13T17:43:52Z")
If you’ve got a Lambda system, you can email `support@lambdalabs.com` and they’ll help you fix it.