I booted Ubuntu Budgie successfully into my new dell precision 7740. But it gets stuck in the grey screen after the grub menu after I select Ubuntu. This happens only in battery mode.

When I start the laptop with AC power, it logs in without any issue. I did the following on the first install to take care of driver issues.

1. Put modprobe.blacklist=nouveau before booting the first time in the edit option in grub.


2. Updated Ubuntu Budgie using sudo apt update && sudo apt upgrade -y


3. Downloaded additional drivers from the Budgie welcome menu.

I don't have any issues with regard to NVIDIA drivers

I do get this message before boot in AC power: iwlwifi 0000:6f:00.0:BIOS contains WGDS but no WRDS After a second or two, the laptop boots normally with no issues and everything functions normally. Sometimes even in AC power, on restart, the screen goes blank after the grub menu and then I have to restart the laptop again but that happens rarely.

The issue is I am not able to get past the gray screen in battery mode.
I have madee these changes in the BIOS settings:

Secure Boot off

set SATA to AHCI

I also tried to boot Ubuntu Budgie 18.04 to recheck, but I got a black screen of death even with the power on, so back to 19.10.

Below are some of the common errors from journalctl. I'm not sure which one is contributing to the issue: (converted some nos to x)

[drm:lspcon_init [xxxx]] *ERROR* Failed to probe lspcon

[drm:intel_ddi_init [xxxx]] *ERROR* LSPCON init failed on port D



PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory

 PAM adding faulty module: pam_kwallet.so

PAM unable to dlopen(pam_kwallet5.so): /lib/security/pam_kwallet5.so: cannot open shared object file: No such file or directory

 PAM adding faulty module: pam_kwallet5.so



lightdm[xxxx]: gkr-pam: unable to locate daemon control file



ucsi_ccg 0-000x: failed to reset PPM!

ucsi_ccg 0-000x: PPM init failed (-110)



nl80211: kernel reports: Attribute failed policy validation

wpa_supplicant[xxx]: Failed to create interface p2p-dev-wlp111s0: -22 (Invalid argument)

wpa_supplicant[xxx]: nl80211: Failed to create a P2P Device interface p2p-dev-wlp111s

I noticed that immediately after logging into a freshly booted 19.10, the system logs in with battery power several times. The issue starts after I update the system for the first time, and then it does not log in battery mode.