Public bug reported:

It seems an intel video driver update is needed to get Ubuntu 20.04.6
working on the Lenovo X1 Carbon Gen 11. On boot, only a blank screen
appears with a blinking cursor.  Here are some details:

# lsb_release -rd
Description:    Ubuntu 20.04.6 LTS
Release:        20.04

# apt-cache policy xserver-xorg-video-intel
xserver-xorg-video-intel:
  Installed: 2:2.99.917+git20200226-1
  Candidate: 2:2.99.917+git20200226-1


uname -a
Linux hostname 5.15.0-97-generic #107~20.04.1-Ubuntu SMP Fri Feb 9 14:20:11 UTC 
2024 x86_64 x86_64 x86_64 GNU/Linux

 lshw -C video
  *-display UNCLAIMED       
       description: VGA compatible controller
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 04
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list
       configuration: latency=0
       resources: iomemory:600-5ff iomemory:400-3ff 
memory:603d000000-603dffffff memory:4000000000-400fffffff ioport:2000(size=64) 
memory:c0000-dffff memory:4010000000-4016ffffff memory:4020000000-40ffffffff


# Xorg -configure

X.Org X Server 1.20.13
X Protocol Version 11, Revision 0
Build Operating System: linux Ubuntu
Current Operating System: Linux hostname 5.15.0-97-generic #107~20.04.1-Ubuntu 
SMP Fri Feb 9 14:20:11 UTC 2024 x86_64
Kernel command line: BOOT_IMAGE=/vmlinuz-5.15.0-97-generic 
root=/dev/mapper/ub2004-root_vol ro i915.enable_psr=0 pci=noaer quiet splash 
vt.handoff=7
Build Date: 29 January 2024  12:44:21PM
xorg-server 2:1.20.13-1ubuntu1~20.04.15 (For technical support please see 
http://www.ubuntu.com/support) 
Current version of pixman: 0.38.4
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Wed Mar  6 17:03:45 2024
List of video drivers:
        amdgpu
        ati
        intel
        nouveau
        qxl
        radeon
        vmware
        modesetting
        fbdev
        vesa
(++) Using config file: "/root/xorg.conf.new"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
modprobe: FATAL: Module fbcon not found in directory 
/lib/modules/5.15.0-97-generic
intel: waited 2020 ms for i915.ko driver to load
Number of created screens does not match number of detected devices.
  Configuration failed.
(EE) Server terminated with error (2). Closing log file.


Of particular note is this portion of the prior command:

modprobe: FATAL: Module fbcon not found in directory 
/lib/modules/5.15.0-97-generic
intel: waited 2020 ms for i915.ko driver to load

Additionally, here are some errors and warnings from a log file:

/var/lib/gdm3/.local/share/xorg# grep "EE\|WW" Xorg.0.log
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    63.123] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[    63.123] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[    63.123] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
[    63.123] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
[    63.123] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
[    63.131] (WW) Falling back to old probe method for modesetting
[    63.131] (EE) open /dev/fb0: Permission denied
[    63.131] (WW) Falling back to old probe method for fbdev
[    63.132] (EE) open /dev/fb0: Permission denied
[    63.132] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
[    63.132] (EE) Screen 0 deleted because of no matching config section.
[    63.132] (EE) Screen 1 deleted because of no matching config section.
[    63.132] (EE) 
[    63.132] (EE) Cannot run in framebuffer mode. Please specify busIDs        
for all framebuffer devices
[    63.132] (EE) 
[    63.132] (EE) 
[    63.132] (EE) Please also check the log file at 
"/var/lib/gdm3/.local/share/xorg/Xorg.0.log" for additional information.
[    63.132] (EE) 
[    63.136] (EE) Server terminated with error (1). Closing log file.


# lscpu
Architecture:                       x86_64
CPU op-mode(s):                     32-bit, 64-bit
Byte Order:                         Little Endian
Address sizes:                      39 bits physical, 48 bits virtual
CPU(s):                             12
On-line CPU(s) list:                0-11
Thread(s) per core:                 1
Core(s) per socket:                 10
Socket(s):                          1
NUMA node(s):                       1
Vendor ID:                          GenuineIntel
CPU family:                         6
Model:                              186
Model name:                         13th Gen Intel(R) Core(TM) i7-1355U
Stepping:                           3
CPU MHz:                            1369.384
CPU max MHz:                        5000.0000
CPU min MHz:                        400.0000
BogoMIPS:                           5222.40
Virtualisation:                     VT-x
L1d cache:                          240 KiB
L1i cache:                          160 KiB
L2 cache:                           6.3 MiB
NUMA node0 CPU(s):                  0-11
Vulnerability Gather data sampling: Not affected
Vulnerability Itlb multihit:        Not affected
Vulnerability L1tf:                 Not affected
Vulnerability Mds:                  Not affected
Vulnerability Meltdown:             Not affected
Vulnerability Mmio stale data:      Not affected
Vulnerability Retbleed:             Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass:    Mitigation; Speculative Store Bypass 
disabled via prctl and seccomp
Vulnerability Spectre v1:           Mitigation; usercopy/swapgs barriers and 
__user pointer sanitization
Vulnerability Spectre v2:           Mitigation; Enhanced IBRS, IBPB 
conditional, RSB filling, PBRSB-eIBRS SW sequence
Vulnerability Srbds:                Not affected
Vulnerability Tsx async abort:      Not affected
Flags:                              fpu vme de pse tsc msr pae mce cx8 apic sep 
mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe 
syscall nx pdpe1gb rdtscp lm constant_tsc art 
                                    arch_perfmon pebs bts rep_good nopl 
xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 
monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr
                                     pdcm sse4_1 sse4_2 x2apic movbe popcnt 
tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch 
cpuid_fault epb ssbd ibrs ibpb stibp ibrs_enhanced tpr_
                                    shadow vnmi flexpriority ept vpid ept_ad 
fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap clflushopt 
clwb intel_pt sha_ni xsaveopt xsavec xgetbv1 
                                    xsaves split_lock_detect avx_vnni dtherm 
ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp hwp_pkg_req umip pku 
ospke waitpkg gfni vaes vpclmulqdq rdpid movdiri 
                                    movdir64b fsrm md_clear serialize arch_lbr 
flush_l1d arch_capabilities


Thank you for your assistance, and feel free to let me know if you need further 
information.

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: Confirmed

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/2056356

Title:
  Screen blank with only curson - Ubuntu 20.04.6 + Intel + X1 Carbon
  Gen11

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/2056356/+subscriptions


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