Help needed: Failed to write to I2C device: Remote I/O error

[Xia-Weiwen]

When I run xpu-smi discovery -d0 I got the following error and output:

[Error] Failed to write to I2C device: Remote I/O error
[Error] mctp Control : I2C Write failure
[Error] MCTP_GET_VERSION command failed
[Error] Failed to initialization mctp init sequence
[Error] Failed to initialize pldm Object for card: 0
[Error] Failed to initialize AMC devices (error code: %d)

  Device ID     Device Information
  0             Device Type: GPU
                Device Name: Intel(R) Arc(TM) Pro B60 Graphics
                Device State: normal
                PCI Device ID: 0xe211
                Vendor Name: Intel(R) Corporation
                SOC UUID: 00000000-0000-000e-0000-0000e2118086
                Serial Number: unknown
                Core Clock Rate: 2400 MHz
                Stepping: A0
                SKU Type: Production ES

                Driver Version: 17012470
                Kernel Version: 6.17.0-41-generic
                GFX Firmware Name: GFX
                GFX Firmware Version: BMG__21.1156
                GFX Firmware Status: normal

                PCI BDF Address: 0000:0e:00.0
                PCI Slot: CPU0_PCIE2
                PCIe Generation: 5
                PCIe Max Link Width: 8
                PCIe Max Bandwidth: 31.50 GB/s

                Memory Physical Size: 24480.00 MiB
                Max Mem Alloc Size: 23256.00 MiB
                ECC State: disabled
                Number of Memory Channels: 6
                Memory Bus Width: 192
                Max Hardware Contexts: 65536
                Max Command Queue Priority: 0

                Number of EUs: 160
                Number of Tiles: 1
                Number of Slices: 5
                Number of Sub Slices per Slice: 4
                Number of Threads per EU: 8
                Physical EU SIMD Width: 16
                Number of Media Engines: 2
                Number of Media Enhancement Engines: 2

It can still show the GPU info but the error messages at the beginning are unexpected. If I run xpu-smi discovery without -d0, there won't be error messages.

This issue occurred after I upgraded the UMD by apt update and apt install --only-upgrade <package_name> (reference: https://dgpu-docs.intel.com/installation-guides/installing-packages-from-the-intel-ppa.html). So, I guess it's related to driver but I don't know how to fix it. That's why I create this issue and ask for help. Thanks in advance.

More system information

# sycl-ls
[level_zero:gpu][level_zero:0] Intel(R) oneAPI Unified Runtime over Level-Zero V2, Intel(R) Arc(TM) Pro B60 Graphics 20.1.0 [1.15.38646+6]
[level_zero:gpu][level_zero:1] Intel(R) oneAPI Unified Runtime over Level-Zero V2, Intel(R) Arc(TM) Pro B60 Graphics 20.1.0 [1.15.38646+6]
[level_zero:gpu][level_zero:2] Intel(R) oneAPI Unified Runtime over Level-Zero V2, Intel(R) Arc(TM) Pro B60 Graphics 20.1.0 [1.15.38646+6]
[level_zero:gpu][level_zero:3] Intel(R) oneAPI Unified Runtime over Level-Zero V2, Intel(R) Arc(TM) Pro B60 Graphics 20.1.0 [1.15.38646+6]
[level_zero:gpu][level_zero:4] Intel(R) oneAPI Unified Runtime over Level-Zero V2, Intel(R) Arc(TM) Pro B60 Graphics 20.1.0 [1.15.38646+6]
[level_zero:gpu][level_zero:5] Intel(R) oneAPI Unified Runtime over Level-Zero V2, Intel(R) Arc(TM) Pro B60 Graphics 20.1.0 [1.15.38646+6]
[level_zero:gpu][level_zero:6] Intel(R) oneAPI Unified Runtime over Level-Zero V2, Intel(R) Arc(TM) Pro B60 Graphics 20.1.0 [1.15.38646+6]
[level_zero:gpu][level_zero:7] Intel(R) oneAPI Unified Runtime over Level-Zero V2, Intel(R) Arc(TM) Pro B60 Graphics 20.1.0 [1.15.38646+6]
[opencl:cpu][opencl:0] Intel(R) OpenCL, INTEL(R) XEON(R) PLATINUM 8592+ OpenCL 3.0 (Build 0) [2026.20.1.0.12_160000]
[opencl:gpu][opencl:1] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) Pro B60 Graphics OpenCL 3.0 NEO  [26.22.38646.6]
[opencl:gpu][opencl:2] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) Pro B60 Graphics OpenCL 3.0 NEO  [26.22.38646.6]
[opencl:gpu][opencl:3] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) Pro B60 Graphics OpenCL 3.0 NEO  [26.22.38646.6]
[opencl:gpu][opencl:4] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) Pro B60 Graphics OpenCL 3.0 NEO  [26.22.38646.6]
[opencl:gpu][opencl:5] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) Pro B60 Graphics OpenCL 3.0 NEO  [26.22.38646.6]
[opencl:gpu][opencl:6] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) Pro B60 Graphics OpenCL 3.0 NEO  [26.22.38646.6]
[opencl:gpu][opencl:7] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) Pro B60 Graphics OpenCL 3.0 NEO  [26.22.38646.6]
[opencl:gpu][opencl:8] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) Pro B60 Graphics OpenCL 3.0 NEO  [26.22.38646.6]
[opencl:cpu][opencl:9] Intel(R) OpenCL, INTEL(R) XEON(R) PLATINUM 8592+ OpenCL 3.0 (Build 0) [2026.21.3.0.31_160000]

# uname -a
Linux cr68s02 6.17.0-41-generic #41-Ubuntu SMP PREEMPT_DYNAMIC Sat Jun 20 18:01:40 UTC 2026 x86_64 GNU/Linux

# cat /etc/os-release
PRETTY_NAME="Ubuntu 25.10"
NAME="Ubuntu"
VERSION_ID="25.10"
VERSION="25.10 (Questing Quokka)"
VERSION_CODENAME=questing
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=questing
LOGO=ubuntu-logo

I can collect more system information if you need. Thanks.

[Xia-Weiwen]

Hi @marquiz @yupengzh-intel @satyeshwar @ywang82 Could you please take a look? Thanks.

[savery42]

Hi @Xia-Weiwen

Can you provide the outputs of:

xpu-smi -v
xpu-smi
xpu-smi discovery --listamcversions
apt-cache policy intel-level-zero-gpu intel-opencl-icd

Was xpu-smi installed from the PPA or GitHub releases?

[Xia-Weiwen]

Hi @savery42 Here are the outputs:

################################
# xpu-smi -v
CLI:
  Version: 2.0.0.20250225
  Build ID: 8389eee7

Service:
  Version: 2.0.0.20250225
  Build ID: 8389eee7
  Level Zero Version: 1.28.6

################################
# xpu-smi
+----------------------------------------------+----------------------------+------------------------+
|            Intel XPU-SMI v2.0    Driver: 64290D8E349F41730D761F4    Level Zero: 1.28.6             |
+----------------------------------------------+----------------------------+------------------------+
| GPU  Name                    Persistence-M   | Bus-Id            Disp.A   |   Volatile Uncorr. ECC |
| Fan              Temp  Pwr:Usage/Cap         | Memory-Usage               |   GPU-Util  Compute M. |
+----------------------------------------------+----------------------------+------------------------+
|   0  Intel(R) Arc(TM) Pro B  Off             | 0000:0e:00.0      Off      |               Disabled |
|      60 Graphics                             |                            |                        |
| N/A               37C  52W / 200W            | 24013MiB / 24480MiB        |      11%       Default |
+----------------------------------------------+----------------------------+------------------------+
|   1  Intel(R) Arc(TM) Pro B  Off             | 0000:34:00.0      Off      |               Disabled |
|      60 Graphics                             |                            |                        |
| N/A               32C  49W / 200W            | 24006MiB / 24480MiB        |      0%        Default |
+----------------------------------------------+----------------------------+------------------------+
|   2  Intel(R) Arc(TM) Pro B  Off             | 0000:47:00.0      Off      |               Disabled |
|      60 Graphics                             |                            |                        |
| N/A               35C  49W / 200W            | 24006MiB / 24480MiB        |      11%       Default |
+----------------------------------------------+----------------------------+------------------------+
|   3  Intel(R) Arc(TM) Pro B  Off             | 0000:5a:00.0      Off      |               Disabled |
|      60 Graphics                             |                            |                        |
| N/A               39C  51W / 200W            | 24006MiB / 24480MiB        |      11%       Default |
+----------------------------------------------+----------------------------+------------------------+
|   4  Intel(R) Arc(TM) Pro B  Off             | 0000:86:00.0      Off      |               Disabled |
|      60 Graphics                             |                            |                        |
| N/A               33C  43W / 200W            | 20828MiB / 24480MiB        |      0%        Default |
+----------------------------------------------+----------------------------+------------------------+
|   5  Intel(R) Arc(TM) Pro B  Off             | 0000:ae:00.0      Off      |               Disabled |
|      60 Graphics                             |                            |                        |
| N/A               32C  43W / 200W            | 19841MiB / 24480MiB        |      0%        Default |
+----------------------------------------------+----------------------------+------------------------+
|   6  Intel(R) Arc(TM) Pro B  Off             | 0000:c2:00.0      Off      |               Disabled |
|      60 Graphics                             |                            |                        |
| N/A               30C  43W / 200W            | 19841MiB / 24480MiB        |      0%        Default |
+----------------------------------------------+----------------------------+------------------------+
|   7  Intel(R) Arc(TM) Pro B  Off             | 0000:d6:00.0      Off      |               Disabled |
|      60 Graphics                             |                            |                        |
| N/A               28C  42W / 200W            | 19841MiB / 24480MiB        |      0%        Default |
+----------------------------------------------+----------------------------+------------------------+

+-------+----------+--------+-------------------------------------------+----------------------------+
| Processes:                                                                                         |
|   GPU        PID    Type    Process Name                                          GPU Memory Usage |
+-------+----------+--------+-------------------------------------------+----------------------------+
|     0     754547     C      /root/miniforge3/envs/weiwen/bin/python                      23978 MiB |
|     1     754548     C      /root/miniforge3/envs/weiwen/bin/python                      23975 MiB |
|     2     754549     C      /root/miniforge3/envs/weiwen/bin/python                      23975 MiB |
|     3     754550     C      /root/miniforge3/envs/weiwen/bin/python                      23975 MiB |
|     4     510865     C      python                                                         254 MiB |
|     4     511170     C      sglang::scheduler_TP0                                        19017 MiB |
|     5     511171     C      sglang::scheduler_TP1                                        19009 MiB |
|     6     511172     C      sglang::scheduler_TP2                                        19009 MiB |
|     7     511173     C      sglang::scheduler_TP3                                        19009 MiB |
+-------+----------+--------+-------------------------------------------+----------------------------+

################################
# xpu-smi discovery --listamcversions
[Error] Failed to write to I2C device: Remote I/O error
[Error] mctp Control : I2C Write failure
[Error] MCTP_GET_VERSION command failed
[Error] Failed to initialization mctp init sequence
[Error] Failed to initialize pldm Object for card: 0
[Error] Failed to initialize AMC devices
[Error] Failed to initialize AMC devices before finding BDF
[Error] Failed to initialize AMC devices before finding BDF
[Error] Failed to initialize AMC devices before finding BDF
[Error] Failed to initialize AMC devices before finding BDF
[Error] Failed to initialize AMC devices before finding BDF
[Error] Failed to initialize AMC devices before finding BDF
[Error] Failed to initialize AMC devices before finding BDF
[Error] Failed to initialize AMC devices before finding BDF

  Device ID     Device Information

################################
# apt-cache policy intel-level-zero-gpu intel-opencl-icd
intel-level-zero-gpu:
  Installed: (none)
  Candidate: (none)
  Version table:
intel-opencl-icd:
  Installed: 26.22.38646.6-1~25.10~ppa1
  Candidate: 26.22.38646.6-1~25.10~ppa1
  Version table:
 *** 26.22.38646.6-1~25.10~ppa1 500
        500 https://ppa.launchpadcontent.net/kobuk-team/intel-graphics/ubuntu questing/main amd64 Packages
        100 /var/lib/dpkg/status
     25.31.34666.3-1ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu questing/universe amd64 Packages

[Xia-Weiwen]

Was xpu-smi installed from the PPA or GitHub releases?

I believe it was installed from the PPA.

# dpkg -l xpu-smi
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version            Architecture Description
+++-==============-==================-============-===============================================================
ii  xpu-smi        2.0.0-1~25.10~ppa1 amd64        Intel(R) XPU System Management Interface(xpu-smi) is a free and

[Xia-Weiwen]

Hi @savery42 Could you please take a look. Thanks.

[eero-t]

Was xpu-smi installed from the PPA or GitHub releases?

I believe it was installed from the PPA.

# dpkg -l xpu-smi

Better to do apt policy xpu-smi, that tells from which configured repo the package is available from (if any).

[Xia-Weiwen]

Was xpu-smi installed from the PPA or GitHub releases?

I believe it was installed from the PPA.

# dpkg -l xpu-smi

Better to do apt policy xpu-smi, that tells from which configured repo the package is available from (if any).

# apt policy xpu-smi
xpu-smi:
  Installed: 2.0.0-1~25.10~ppa1
  Candidate: 2.0.0-1~25.10~ppa1
  Version table:
 *** 2.0.0-1~25.10~ppa1 500
        500 https://ppa.launchpadcontent.net/kobuk-team/intel-graphics/ubuntu questing/main amd64 Packages
        100 /var/lib/dpkg/status

Thanks.