I'm having a problem with Ubuntu 26.04 LTS. After updating from 25.10 to 26.04 beta at first then to the 26.04 LTS and it started freezing, meaning it runs for about 10 seconds and then freezes for about 0.5 seconds. I watch YouTube and it freezes regularly. I do a speed test on the website, and it freezes for 0.5 sec after around 5-10 sec. I play on Steam and it freezes, but I can hear that the graphics card isn't working at the moment—it doesn't make the same noises it normally does. When watching YouTube or running speed tests on the website, the CPU temperature is a maximum of 70 degrees Celsius, and the GPU is 30 degrees Celsius. Everything works fine except for the freezing. My question is, how can I approach this? How can I diagnose the problem? Or what could be the cause?
Command result:
lspci -k | grep -A 3 -E 'VGA|3D|Display'
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 48 [Radeon RX 9070/9070 XT/9070 GRE] (rev c0)
Subsystem: XFX Limited Device 8811
Kernel driver in use: amdgpu
Kernel modules: amdgpu
Update:
After reinstalling Ubuntu 26.04 LTS (clean install), the stutters still occur, i.e. the GPU and VRAM clock speeds drop to zero.
Best regards
Marek
I had a similar problem, while way more severe: My laptop (running Ubuntu 26.04 LTS), has random freezes that happen about every 9 hours of use. They are permanent, meaning I have to force a reboot, as even tty doesn't respond. This also leaves no trace in journalctl, and happen even in low-intensity loads.
I was able to "resolve" the bug by forcing the system to only use C-0:
sudo sed -i 's/intel_idle.max_cstate=1/intel_idle.max_cstate=2/' /etc/default/grub
sudo update-grub && sudo reboot
I am now trying to lower the C-state progressively to understand if it's only a problem at very low C-states.
System specs:
OS:
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
VERSION_ID="26.04"
VERSION="26.04 LTS (Resolute Raccoon)"
VERSION_CODENAME=resolute
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=resolute
LOGO=ubuntu-logo
Laptop model and BIOS (unmodified apart from SSD):
bet@bet-XPS-13-9370:~$ sudo dmidecode -t system
sudo dmidecode -t baseboard
sudo dmidecode -t bios
[sudo: authenticate] Password:
# dmidecode 3.6
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: Dell Inc.
Product Name: XPS 13 9370
Version: Not Specified
Serial Number: [don't know if sensitive, redacted]
UUID: [don't know if sensitive, redacted]
Wake-up Type: Power Switch
SKU Number: 07E6
Family: XPS
Handle 0x0022, DMI type 12, 5 bytes
System Configuration Options
Option 1: Default string
Handle 0x0023, DMI type 15, 35 bytes
System Event Log
Area Length: 4 bytes
Header Start Offset: 0x0000
Header Length: 2 bytes
Data Start Offset: 0x0002
Access Method: Indexed I/O, one 16-bit index port, one 8-bit data port
Access Address: Index 0x046A, Data 0x046C
Status: Invalid, Not Full
Change Token: 0x00000000
Header Format: No Header
Supported Log Type Descriptors: 6
Descriptor 1: End of log
Data Format 1: OEM-specific
Descriptor 2: End of log
Data Format 2: OEM-specific
Descriptor 3: End of log
Data Format 3: OEM-specific
Descriptor 4: End of log
Data Format 4: OEM-specific
Descriptor 5: End of log
Data Format 5: OEM-specific
Descriptor 6: End of log
Data Format 6: OEM-specific
Handle 0x002A, DMI type 32, 20 bytes
System Boot Information
Status: No errors detected
# dmidecode 3.6
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.
Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
Manufacturer: Dell Inc.
Product Name: 0F6P3V
Version: A00
Serial Number: /FHZS6S2/CNCMK008C70758/
Asset Tag: Not Specified
Features:
Board is a hosting board
Board is replaceable
Location In Chassis: Not Specified
Chassis Handle: 0x0300
Type: Motherboard
Contained Object Handles: 0
Handle 0x0020, DMI type 10, 6 bytes
On Board Device Information
Type: Video
Status: Enabled
Description: "Intel HD Graphics"
Handle 0x0037, DMI type 41, 11 bytes
Onboard Device
Reference Designation: Onboard IGD
Type: Video
Status: Enabled
Type Instance: 1
Bus Address: 0000:00:02.0
Handle 0x0038, DMI type 41, 11 bytes
Onboard Device
Reference Designation: Onboard LAN
Type: Ethernet
Status: Enabled
Type Instance: 1
Bus Address: 0000:00:19.0
Handle 0x0039, DMI type 41, 11 bytes
Onboard Device
Reference Designation: Onboard 1394
Type: Other
Status: Enabled
Type Instance: 1
Bus Address: 0000:03:1c.2
# dmidecode 3.6
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: Dell Inc.
Version: 1.21.0
Release Date: 07/06/2022
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 16 MB
Characteristics:
PCI is supported
PNP is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
EDD is supported
Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
5.25"/1.2 MB floppy services are supported (int 13h)
3.5"/720 kB floppy services are supported (int 13h)
3.5"/2.88 MB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
ACPI is supported
USB legacy is supported
Smart battery is supported
BIOS boot specification is supported
Function key-initiated network boot is supported
Targeted content distribution is supported
UEFI is supported
BIOS Revision: 1.21
Handle 0xF039, DMI type 13, 22 bytes
BIOS Language Information
Language Description Format: Long
Installable Languages: 2
en|US|iso8859-1
<BAD INDEX>
Currently Installed Language: en|US|iso8859-1
CPU:
bet@bet-XPS-13-9370:~$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 39 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Vendor ID: GenuineIntel
Model name: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
CPU family: 6
Model: 142
Thread(s) per core: 2
Core(s) per socket: 4
Socket(s): 1
Stepping: 10
CPU(s) scaling MHz: 32%
CPU max MHz: 4000,0000
CPU min MHz: 400,0000
BogoMIPS: 3999,93
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 r
dtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx
est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnow
prefetch cpuid_fault epb pti ssbd ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust sgx bmi1 avx2 smep bmi2 erms i
nvpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp
vnmi md_clear flush_l1d arch_capabilities
Virtualization features:
Virtualization: VT-x
Caches (sum of all):
L1d: 128 KiB (4 instances)
L1i: 128 KiB (4 instances)
L2: 1 MiB (4 instances)
L3: 8 MiB (1 instance)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0-7
Vulnerabilities:
Gather data sampling: Vulnerable
Ghostwrite: Not affected
Indirect target selection: Not affected
Itlb multihit: KVM: Mitigation: Split huge pages
L1tf: Mitigation; PTE Inversion; VMX conditional cache flushes, SMT vulnerable
Mds: Mitigation; Clear CPU buffers; SMT vulnerable
Meltdown: Mitigation; PTI
Mmio stale data: Mitigation; Clear CPU buffers; SMT vulnerable
Old microcode: Not affected
Reg file data sampling: Not affected
Retbleed: Mitigation; IBRS
Spec rstack overflow: Not affected
Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Spectre v2: Mitigation; IBRS; IBPB conditional; STIBP conditional; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected
Srbds: Mitigation; Microcode
Tsa: Not affected
Tsx async abort: Not affected
Vmscape: Mitigation; IBPB before exit to userspace
RAM:
bet@bet-XPS-13-9370:~$ sudo dmidecode -t memory
free -h
# dmidecode 3.6
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.
Handle 0x003C, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 16 GB
Error Information Handle: Not Provided
Number Of Devices: 2
Handle 0x003D, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x003C
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 8 GB
Form Factor: Row Of Chips
Set: None
Locator: System Board Memory
Bank Locator: Not Specified
Type: LPDDR3
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 2133 MT/s
Manufacturer: SK Hynix
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: H9CCNNNCLGALAR-NVD
Rank: 2
Configured Memory Speed: 2133 MT/s
Minimum Voltage: 1.25 V
Maximum Voltage: 1.25 V
Configured Voltage: 1.2 V
Handle 0x003E, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x003C
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 8 GB
Form Factor: Row Of Chips
Set: None
Locator: System Board Memory
Bank Locator: Not Specified
Type: LPDDR3
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 2133 MT/s
Manufacturer: SK Hynix
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: H9CCNNNCLGALAR-NVD
Rank: 2
Configured Memory Speed: 2133 MT/s
Minimum Voltage: 1.25 V
Maximum Voltage: 1.25 V
Configured Voltage: 1.2 V
total utiliz liber condiv buff/cache disponibile
Mem: 14Gi 4,1Gi 7,6Gi 1,0Gi 4,2Gi 10Gi
Swap: 15Gi 0B 15Gi
SSD:
bet@bet-XPS-13-9370:~$ lsblk -d -o NAME,MODEL,SIZE,ROTA,TRAN
sudo nvme list
sudo smartctl -a /dev/nvme0n1
NAME MODEL SIZE ROTA TRAN
loop0 4K 0
loop1 143,9M 0
loop2 200,9M 0
loop3 406,2M 0
loop4 415,9M 0
loop5 453,2M 0
loop6 504,4M 0
loop7 470,2M 0
loop8 55,5M 0
loop9 470,6M 0
loop10 63,8M 0
loop11 63,8M 0
loop12 74M 0
loop13 66,8M 0
loop14 66,8M 0
loop15 49,1M 0
loop16 347,5M 0
loop17 49,1M 0
loop18 19,6M 0
loop19 20M 0
loop20 164,8M 0
loop21 62,2M 0
loop22 16,5M 0
loop23 531,4M 0
loop24 606,1M 0
loop25 531,5M 0
loop26 614,5M 0
loop27 91,7M 0
loop28 1,5G 0
loop29 1,5G 0
loop30 1,6G 0
loop31 371,5M 0
loop32 4,3M 0
loop33 395M 0
loop34 402M 0
loop35 1009,1M 0
loop36 236,4M 0
loop37 18,8M 0
loop38 18,8M 0
loop39 28,6M 0
loop40 174,4M 0
loop41 15,7M 0
loop42 50,1M 0
loop43 828K 0
loop44 50,1M 0
loop45 828K 0
loop46 175,2M 0
loop47 175,5M 0
loop48 460,6M 0
loop49 44K 0
loop50 576,1M 0
sda STORAGE DEVICE 0B 0 usb
sdb STORAGE DEVICE 0B 0 usb
nvme0n1 Lexar SSD NM790 2TB 1,9T 0 nvme
GPU:
bet@bet-XPS-13-9370:~$ lspci -k | grep -A 3 VGA
00:02.0 VGA compatible controller: Intel Corporation Kaby Lake-R GT2 [UHD Graphics 620] (rev 07)
DeviceName: Onboard IGD
Subsystem: Dell Device 07e6
Kernel driver in use: i915
BATTERY:
bet@bet-XPS-13-9370:~$ upower -i /org/freedesktop/UPower/devices/battery_BAT0
native-path: BAT0
vendor: SMP
model: DELL WDK3692
serial: 59782
power supply: yes
updated: ven 31 lug 2026, 11:16:30 (13 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: fully-charged
warning-level: none
energy: 34,5136 Wh
energy-empty: 0 Wh
energy-full: 34,5136 Wh
energy-full-design: 40,7 Wh
voltage-min-design: 7,4 V
capacity-level: Full
energy-rate: 0,0074 W
voltage: 8,226 V
charge-cycles: N/A
percentage: 100%
capacity: 84,8%
technology: lithium-ion
charge-start-threshold: 75%
charge-end-threshold: 80%
charge-threshold-enabled: yes
charge-threshold-supported: yes
icon-name: 'battery-full-charged-symbolic'
History (voltage):
1785489329 8,226 fully-charged
1785489299 8,225 fully-charged
