@ Ben Baker thank you for your suggestion. I did try and here is what has actually happened:
When I only added `intel_idle.max_cstate=1` kernel boot arg to grub boot, without `nomodeset` and without `i915.enable_psr=0`, I got a system freeze just when the login screen showed up. I only tried this once. Then, I have added `intel_idle.max_cstate=1` along 'i915.enable_psr=0' (without `nomodeset`). This time, the system booted fine. When I tried "sudo systemctl suspend", yes, the system went into sleep and woke up fine. I did not wait too long after the system went into sleep and me waking it up again. I have tried this on AC and on battery and it worked both times. And it does so even if I just close the lid and then open it back up again. Great! What still seems to be an issue, however, if the screen fades to black after being idle. Now, if this happens and one would quickly interact with the system, all comes back and works fine. IF THERE IS 10-20 SECONDS WAIT AFTER THE SCREEN FADED TO BLACK, it becomes unresponsive (I repeated the test three times, and once it happened after 2 minutes 39 seconds)! I had ping running to this laptop and I also had an ssh connection showing 'top' and both were gone (ping stopped and 'top' stopped updating). I also tried to issue "sudo systemctl hibernate" and again, the screen would go black straight away, keyboard back-light would fade, with the power button led still on, and, the system would become unresponsive (still, if I press any key on the keyboard, the back-light would come back on again and fade after a little while). For the record, ping and 'top' via ssh would also stop. It would be really good for this to get a solution. (I tried running Ubuntu 23.04 and the problem persists, without me testing too much). -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2006994 Title: Ubuntu 22.10 and Dell Latitude 7390 – screen does not turn back on after waking up from sleep Status in linux package in Ubuntu: Confirmed Bug description: Ubuntu 22.10 and Dell Latitude 7390 – screen does not turn back on after waking up from sleep Scenario: Fresh and clean Ubuntu 22.10 install on Latitude 7390, requiring nomodeset kernel boot option to be added in GRUB at boot time when booting from USB stick. This can be achieved by following instructions from here: https://www.dell.com/support/kbdoc/en-uk/000123893/manual- nomodeset-kernel-boot-line-option-for-linux-booting Then, nomodeset needs to be permanently added to /etc/default/grub Followed instructions from https://askubuntu.com/questions/38780/how-do-i-set-nomodeset-after-ive-already-installed-ubuntu If nomodeset is not added, Dell Latitude 7390 will freeze at one point or another, either before reaching the Gnome desktop, either little after. This is the case with both, installing Ubuntu 22.10 from Live USB and running Ubuntu 22.10 after install the install (and having the USB stick disconnected). The issue after having Ubuntu 22.10 installed on Dell Latitude 7390 and having nomodeset permanently added to GRUB for each boot is: If by chance the system goes into sleep, after waking up, there is a totally pitch-black screen; nothing shows up, no screen backlight either. However, caps-lock works and I am able to log in to the system via ssh and can see the system is up an running well. I can even issue a request to send the system to sleep by “sudo systemctl suspend” and then wake the the system up several times without loosing ssh access, however, the screen will remain pitch-black. Other tries to troubleshoot and see if the system can be brought back with a working display (while nomodeset kernel option is being used): 1. sudo systemctl suspend -i >>> this will result in an unusable system after waking up, again, with a pitch-black screen; moreover, the caps-lock would not work, the keyboard backlight won’t work, ssh won’t work; I need a hard reset to get the system back up. 2. start the system in single user mode by inserting “single” in GRUB at boot time; >>> the system will be unusable after waking up, same as in try 1. 3. after a normal boot into the GNOME desktop with kernel nomodeset option and investigating the dmesg for any acpi, no error could be found. Tried to read up on other possible solutions, while stumbled upon the ubuntu wiki page below: https://wiki.ubuntu.com/UnderstandingSuspend Unfortunately, to not much help so far. Other notes: N1. All the above were done by having the latest BIOS v1.30.0 N2. This laptop came with Windows 10 Pro which works fine: goes into suspend and wakes up fine, with working screen and display. N3. Dell Latitude 7390 was released on 15 Feb 2018 ( source: https://www.laptoparena.net/dell/notebook-dell-latitude-7390-n025l739013emea-black-12984 ) and the user manual states it has support for Ubuntu. Therefore, other older and major Ubuntu versions were given a try, along with a new version of Fedora: N3.1 – Ubuntu 22.04 N3.2 – Ubuntu 18.04.6 N3.3 – Ubuntu 16.04.7 N3.4 – Fedora-Workstation-Live-x86_64-37-1.7 Each of the above will freeze at one point or another if nomodeset is not used, except the Ubuntu 18.04.6 and Ubuntu 16.04.7 which will run well and install well from the USB Live stick and will also run fine after the install, until the system goes into sleep, after which, when the system is awake, the screen is black and will have nothing displayed. Any advice will be appreciated. Thank you! ProblemType: Bug DistroRelease: Ubuntu 22.10 Package: linux-image-5.19.0-31-generic 5.19.0-31.32 ProcVersionSignature: Ubuntu 5.19.0-31.32-generic 5.19.17 Uname: Linux 5.19.0-31-generic x86_64 ApportVersion: 2.23.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: tuser 2832 F.... wireplumber /dev/snd/seq: tuser 2829 F.... pipewire CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sat Feb 11 13:37:59 2023 InstallationDate: Installed on 2023-01-15 (27 days ago) InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 8087:0a2b Intel Corp. Bluetooth wireless interface Bus 001 Device 002: ID 0bda:5650 Realtek Semiconductor Corp. Integrated Webcam_HD Bus 001 Device 004: ID 0a5c:5832 Broadcom Corp. 5880 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Latitude 7390 ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.19.0-31-generic root=UUID=ef0306ad-ea82-4608-b711-ee16cf13a267 ro debug nomodeset ignore_loglevel RelatedPackageVersions: linux-restricted-modules-5.19.0-31-generic N/A linux-backports-modules-5.19.0-31-generic N/A linux-firmware 20220923.gitf09bebf3-0ubuntu1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: dmi.bios.date: 11/20/2022 dmi.bios.release: 1.30 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.30.0 dmi.board.name: 09386V dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.30.0:bd11/20/2022:br1.30:svnDellInc.:pnLatitude7390:pvr:rvnDellInc.:rn09386V:rvrA00:cvnDellInc.:ct10:cvr:sku081B: dmi.product.family: Latitude dmi.product.name: Latitude 7390 dmi.product.sku: 081B dmi.sys.vendor: Dell Inc. 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