Ashwin Lewis
If you're a user of Ubuntu 22.04, you may have experienced issues with your laptop not waking up from sleep. This can be due to various factors, such as problems with the CPU cstate setting, graphics driver, or the nvidia drivers. To resolve this issue, you can try limiting how far your CPU goes to sleep by adding the boot parameter intel_idle.max_cstate=4 in the /etc/default/grub file. Alternatively, you can try changing the driver from nvidia-driver-525 (proprietary) to nvidia-driver-525-open (proprietary) or upgrading to a newer kernel version. If these solutions don't work, it may be due to hardware incompatibility or other technical glitches, which require further investigation and troubleshooting.
| Characteristics | Values |
|---|---|
| What is suspend? | Sends your computer to sleep so it uses less power |
| Why does my computer not turn back on after I suspended it? | Suspend might not be supported properly by your hardware |
| How to wake up the computer? | Press a key, click the mouse, or press the power button |
| What to do if the above doesn't work? | Make sure the monitor is on and try pressing a key on the keyboard again |
| What to do as a last resort? | Turn off the computer by holding the power button for 5-10 seconds (you will lose unsaved work) |
| What to do if the suspend feature doesn't work with your hardware? | Upgrade from the 5.15 kernel to the 6.5 hwe kernel, or change the driver from nvidia-driver-525 (proprietary) to nvidia-driver-525-open (proprietary) |
| What to do if you have an AMD/ATI card? | Try installing the mainline and kernel 6.4.11-060411-generic |
| What to do if your computer wakes up immediately after suspend? | Add the boot parameter "intel_idle.max_cstate=4" in /etc/default/grub, in line GRUB_CMDLINE_LINUX_DEFAULT |
Explore related products
What You'll Learn
Suspending Ubuntu to save power
Suspending your Ubuntu computer can help you save power. When you suspend your computer, it goes into a sleep mode, reducing power consumption. This can be particularly useful for laptop users who want to conserve battery life.
To suspend your Ubuntu computer, you can simply close the lid, which will trigger it to go to sleep. Alternatively, you can set up automatic suspension based on a timer or certain triggers. This can be useful if you are using a desktop computer and want to save power when you step away.
However, some users have reported issues with their Ubuntu computers not waking up from sleep mode. This could be due to various reasons, such as problems with the CPU cstate setting, graphics driver, or, in some cases, the NVIDIA driver. If you encounter this issue, there are several troubleshooting steps you can take.
First, check your hardware compatibility. Suspend may not be properly supported by your hardware. Try pressing a key or clicking the mouse to wake up your computer. If that doesn't work, press the power button once. Ensure that your computer monitor is switched on, and try pressing a key again. As a last resort, hold the power button for 5-10 seconds to turn off the computer, but note that you will lose any unsaved work.
If you suspect the issue is driver-related, you can try reinstalling or updating your drivers. For NVIDIA drivers, you can try changing the driver from nvidia-driver-525 (proprietary) to nvidia-driver-525-open (proprietary) in the Software & Updates -> Additional Drivers section. Additionally, upgrading your kernel version might help resolve the issue, as some users have reported.
By following these steps, you can effectively suspend your Ubuntu computer to save power and troubleshoot any issues that may arise when trying to wake it up.
Reviving Lithium-Ion Batteries: A Step-by-Step Guide
You may want to see also
Explore related products
Issues with Ubuntu not waking up from sleep
If your Ubuntu device is not waking up from sleep, there could be several reasons for this issue. One common cause is problems with the graphics driver, particularly for Nvidia users. In some cases, the issue can be resolved by reinstalling the driver or changing it from nvidia-driver-525 (proprietary) to nvidia-driver-525-open (proprietary).
Another potential cause is the cpu cstate setting. By adding the boot parameter "intel_idle.max_cstate=4" in the /etc/default/grub file, you can limit how far your CPU goes to sleep, making it easier for your device to wake up.
For AMD users, installing the AMD drivers downloaded directly from AMD may resolve the issue. Upgrading from the 5.15 kernel to the 6.5 hwe kernel has also been reported to fix the problem for some users.
If you are using a laptop, the issue could be related to the lid. Some users have reported that their Ubuntu device does not wake up after the lid has been closed, requiring them to power off and back on.
Additionally, wireless devices may have problems handling the suspension and may not resume properly when the device wakes up.
If none of these solutions work, it may be that the suspend feature is not supported properly by your hardware. In this case, you may need to consider alternative power-saving measures.
Troubleshooting Guide: Laptop Won't Wake Up From Sleep Mode
You may want to see also
Explore related products
Changing drivers to fix sleep issues
If you're having issues with your Ubuntu device not waking up from sleep mode, it may be due to problems with your graphics driver.
Nvidia Drivers
If you're using an Nvidia driver, you may encounter problems with your Ubuntu device not waking up from sleep. This issue has been observed by several users who have installed Nvidia drivers on their devices. In some cases, the device may not resume properly after sleep mode, or it may wake up immediately after being suspended.
To resolve this issue, you can try changing the Nvidia driver. For example, if you're using the Nouveau X.org driver, you can switch to the nvidia-driver-470 (proprietary and tested) option from the "additional drivers" program in Ubuntu. Alternatively, you can try reinstalling the driver, as some users have reported success with this approach.
AMD/ATI Cards
If you're using an AMD/ATI card, it's important to note that these are not driven by Nvidia drivers. In this case, you may need to explore other solutions, such as updating your kernel or checking your CPU cstate settings.
Kernel Updates
In some instances, updating your kernel version may resolve sleep issues. For example, one user reported that upgrading from the 5.15 kernel to the 6.5 HWE kernel resolved the problem.
CPU Cstate Settings
Another potential solution is to adjust your CPU cstate settings. This can be done by adding the boot parameter "intel_idle.max_cstate=4" in the GRUB_CMDLINE_LINUX_DEFAULT line in /etc/default/grub. This limits how far your CPU can go into sleep mode, making it easier for your device to wake up.
Remember to consider the specific hardware and software configurations of your Ubuntu device, as well as any recent changes or updates that may have contributed to the sleep issues.
Wake Up Refreshed: Light Sleep Strategies for Morning Energy
You may want to see also
Explore related products
Upgrading kernels to fix sleep issues
Upgrading kernels can be a solution to fix sleep issues on Ubuntu. For instance, a user reported that upgrading from the 5.15 kernel to the 6.5 HWE kernel resolved the issue of Ubuntu 22.04 not waking up from sleep. Another user also confirmed that upgrading to the 6.5 kernel worked for them, although they had the recommended Nvidia drivers installed.
In another instance, a user reported that upgrading to the 5.11.0-22 kernel solved the sleep issue they were facing on Ubuntu 21.04 with kernel 5.11.0-25. Similarly, a user facing a black screen issue on Ubuntu 20.04 with kernel 5.4.0-92-generic found that upgrading to the 5.14.0 kernel resolved the problem.
It is worth noting that while upgrading kernels can resolve sleep issues, it can also introduce new problems. For example, a user reported that since upgrading to kernel 6.9, their laptop has been getting warmer and the battery has been draining during sleep. The user found that reverting to kernel 6.8.9 resolved these issues.
Therefore, while upgrading kernels can be a solution to fix sleep issues, it is important to carefully consider the specific version of the kernel and ensure that it is compatible with your hardware and software configuration. Additionally, it is advisable to refer to official documentation and community forums for guidance on upgrading kernels and addressing sleep issues in Ubuntu.
Fitbit's Light Sleep Wake-Up Feature: Effective or Gimmick?
You may want to see also
Explore related products
Configuring automatic suspend
Ubuntu Linux has a centralized location for most of its settings. You can configure your computer to automatically suspend when idle. To do this, access the System Settings panel by clicking on the System menu in the top-right corner of the top bar on your desktop. From the System menu, select Settings, then click on the Power tile to open the panel.
In the System Settings -> Power settings panel, click on the Automatic Suspend tile under Power Saving Options. Here, you can choose between On Battery Power or Plugged In, set the switch to on, and select a delay. Both options can be configured, and you can specify different intervals for each. On a desktop computer, there is an additional option labelled When Idle.
Exit the Settings app, and your changes will be saved. You can also manually suspend your computer in Ubuntu Linux if your computer hardware supports it. However, it is recommended that you save all your work before doing so, in case something goes wrong and your open applications and documents cannot be recovered.
To test if your Ubuntu system is configured correctly for automatic suspension, open the Activities overview and start typing Power. Click Power to open the panel. In the Power Saving Options section, click Automatic Suspend. Check your configuration and make sure the switch is turned on.
Waking Your Note 4: Sleep Mode Solutions
You may want to see also
Frequently asked questions
To put your Ubuntu computer to sleep, simply close the lid.
You can wake up your Ubuntu computer by pressing any key on your keyboard or clicking the mouse. If this doesn't work, try pressing the power button once.
There could be several reasons for this issue. It could be related to your hardware, CPU c-state settings, graphics drivers, or installed updates. Try updating your graphics drivers or adjusting your CPU c-state settings in the GRUB configuration file.
To set up automatic suspend, go to your power settings and configure your computer to suspend automatically after a certain period of inactivity. This will help reduce power consumption and improve your battery life.
