Dear Linux folks,
On the Dell XPS 13 9370 with Debian sid/unstable, connecting a Dell
DA300 port replicator Linux 5.18.16 logs a warning:
```
$ dmesg
[ 0.000000] Linux version 5.18.0-4-amd64
([email protected]) (gcc-11 (Debian 11.3.0-5) 11.3.0, GNU
ld (GNU Binutils for Debian) 2.38.90.20220713) #1 SMP PREEMPT_DYNAMIC
Debian 5.18.16-1 (2022-08-10)
[ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-5.18.0-4-amd64
root=UUID=56f398e0-1e25-4fda-aa9f-611dece4b333 ro quiet
[…]
[ 0.000000] DMI: Dell Inc. XPS 13 9370/0RMYH9, BIOS 1.21.0 07/06/2022
[…]
[ 13.900028] ucsi_acpi USBC000:00: UCSI_GET_PDOS returned 0 bytes
```
```
$ lsusb
Bus 002 Device 003: ID 0bda:8153 Realtek Semiconductor Corp. RTL8153
Gigabit Ethernet Adapter
Bus 002 Device 002: ID 2109:0820 VIA Labs, Inc. VL820 Hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:0a2b Intel Corp. Bluetooth wireless interface
Bus 001 Device 003: ID 0bda:58f4 Realtek Semiconductor Corp.
Integrated_Webcam_HD
Bus 001 Device 006: ID 27c6:5385 Shenzhen Goodix Technology Co.,Ltd.
Fingerprint Reader
Bus 001 Device 005: ID 06c4:c412 Bizlink International Corp. DELL DA300
Bus 001 Device 002: ID 2109:2820 VIA Labs, Inc. VL820 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
```
How can that warning be addressed?
Kind regards,
Paul
On Fri, Aug 19, 2022 at 03:37:00PM +0200, Paul Menzel wrote:
> Dear Linux folks,
>
>
> On the Dell XPS 13 9370 with Debian sid/unstable, connecting a Dell DA300
> port replicator Linux 5.18.16 logs a warning:
>
> ```
> $ dmesg
> [ 0.000000] Linux version 5.18.0-4-amd64 ([email protected])
> (gcc-11 (Debian 11.3.0-5) 11.3.0, GNU ld (GNU Binutils for Debian)
> 2.38.90.20220713) #1 SMP PREEMPT_DYNAMIC Debian 5.18.16-1 (2022-08-10)
> [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-5.18.0-4-amd64
> root=UUID=56f398e0-1e25-4fda-aa9f-611dece4b333 ro quiet
> […]
> [ 0.000000] DMI: Dell Inc. XPS 13 9370/0RMYH9, BIOS 1.21.0 07/06/2022
> […]
> [ 13.900028] ucsi_acpi USBC000:00: UCSI_GET_PDOS returned 0 bytes
> ```
What warning?
>
> ```
> $ lsusb
> Bus 002 Device 003: ID 0bda:8153 Realtek Semiconductor Corp. RTL8153 Gigabit
> Ethernet Adapter
> Bus 002 Device 002: ID 2109:0820 VIA Labs, Inc. VL820 Hub
> Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 001 Device 004: ID 8087:0a2b Intel Corp. Bluetooth wireless interface
> Bus 001 Device 003: ID 0bda:58f4 Realtek Semiconductor Corp.
> Integrated_Webcam_HD
> Bus 001 Device 006: ID 27c6:5385 Shenzhen Goodix Technology Co.,Ltd.
> Fingerprint Reader
> Bus 001 Device 005: ID 06c4:c412 Bizlink International Corp. DELL DA300
> Bus 001 Device 002: ID 2109:2820 VIA Labs, Inc. VL820 Hub
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> ```
>
> How can that warning be addressed?
What warning?
You have a SGX error in your kernel boot log:
> [ 0.235418] sgx: EPC section 0x40200000-0x45f7ffff
> [ 0.235853] ------------[ cut here ]------------
> [ 0.235855] WARNING: CPU: 1 PID: 83 at arch/x86/kernel/cpu/sgx/main.c:446 ksgxd+0x1b7/0x1d0
> [ 0.235861] Modules linked in:
> [ 0.235862] CPU: 1 PID: 83 Comm: ksgxd Not tainted 5.18.0-4-amd64 #1 Debian 5.18.16-1
> [ 0.235865] Hardware name: Dell Inc. XPS 13 9370/0RMYH9, BIOS 1.21.0 07/06/2022
> [ 0.235866] RIP: 0010:ksgxd+0x1b7/0x1d0
> [ 0.235869] Code: ff e9 f2 fe ff ff 48 89 df e8 55 56 0d 00 84 c0 0f 84 c3 fe ff ff 31 ff e8 c6 56 0d 00 84 c0 0f 85 94 fe ff ff e9 af fe ff ff <0f> 0b e9 7f fe ff ff e8 3d dd 93 00 66 66 2e 0f 1f 84 00 00 00 00
> [ 0.235870] RSP: 0000:ffffaaed0097bed8 EFLAGS: 00010287
> [ 0.235872] RAX: ffffaaed00431890 RBX: ffff9a323ccc8000 RCX: 0000000000000000
> [ 0.235873] RDX: 0000000080000000 RSI: ffffaaed00431850 RDI: 00000000ffffffff
> [ 0.235875] RBP: ffff9a31416ca080 R08: ffff9a31416cae40 R09: ffff9a31416cae40
> [ 0.235876] R10: 0000000000000000 R11: 0000000000000001 R12: ffffaaed0006bce0
> [ 0.235877] R13: ffff9a3140e9c480 R14: ffffffff9825ee60 R15: 0000000000000000
> [ 0.235878] FS: 0000000000000000(0000) GS:ffff9a32e6640000(0000) knlGS:0000000000000000
> [ 0.235880] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 0.235881] CR2: 0000000000000000 CR3: 00000001fbe10001 CR4: 00000000003706e0
> [ 0.235882] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 0.235883] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> [ 0.235884] Call Trace:
> [ 0.235893] <TASK>
> [ 0.235895] ? _raw_spin_lock_irqsave+0x24/0x60
> [ 0.235900] ? _raw_spin_unlock_irqrestore+0x23/0x40
> [ 0.235902] ? __kthread_parkme+0x36/0x90
> [ 0.235905] kthread+0xe5/0x110
> [ 0.235907] ? kthread_complete_and_exit+0x20/0x20
> [ 0.235909] ret_from_fork+0x1f/0x30
> [ 0.235914] </TASK>
> [ 0.235915] ---[ end trace 0000000000000000 ]---
Talk to the SGX developers about that mess :)
thanks,
greg k-h
Dear Greg,
Am 19.08.22 um 17:30 schrieb Greg KH:
> On Fri, Aug 19, 2022 at 03:37:00PM +0200, Paul Menzel wrote:
>> On the Dell XPS 13 9370 with Debian sid/unstable, connecting a Dell DA300
>> port replicator Linux 5.18.16 logs a warning:
>>
>> ```
>> $ dmesg
>> [ 0.000000] Linux version 5.18.0-4-amd64 ([email protected])
>> (gcc-11 (Debian 11.3.0-5) 11.3.0, GNU ld (GNU Binutils for Debian)
>> 2.38.90.20220713) #1 SMP PREEMPT_DYNAMIC Debian 5.18.16-1 (2022-08-10)
>> [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-5.18.0-4-amd64
>> root=UUID=56f398e0-1e25-4fda-aa9f-611dece4b333 ro quiet
>> […]
>> [ 0.000000] DMI: Dell Inc. XPS 13 9370/0RMYH9, BIOS 1.21.0 07/06/2022
>> […]
>> [ 13.900028] ucsi_acpi USBC000:00: UCSI_GET_PDOS returned 0 bytes
>> ```
>
> What warning?
`ucsi_acpi USBC000:00: UCSI_GET_PDOS returned 0 bytes` has log level
warning.
>> ```
>> $ lsusb
>> Bus 002 Device 003: ID 0bda:8153 Realtek Semiconductor Corp. RTL8153 Gigabit
>> Ethernet Adapter
>> Bus 002 Device 002: ID 2109:0820 VIA Labs, Inc. VL820 Hub
>> Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
>> Bus 001 Device 004: ID 8087:0a2b Intel Corp. Bluetooth wireless interface
>> Bus 001 Device 003: ID 0bda:58f4 Realtek Semiconductor Corp.
>> Integrated_Webcam_HD
>> Bus 001 Device 006: ID 27c6:5385 Shenzhen Goodix Technology Co.,Ltd.
>> Fingerprint Reader
>> Bus 001 Device 005: ID 06c4:c412 Bizlink International Corp. DELL DA300
>> Bus 001 Device 002: ID 2109:2820 VIA Labs, Inc. VL820 Hub
>> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>> ```
>>
>> How can that warning be addressed?
>
> What warning?
See above.
> You have a SGX error in your kernel boot log:
>
>> [ 0.235418] sgx: EPC section 0x40200000-0x45f7ffff
>> [ 0.235853] ------------[ cut here ]------------
>> [ 0.235855] WARNING: CPU: 1 PID: 83 at arch/x86/kernel/cpu/sgx/main.c:446 ksgxd+0x1b7/0x1d0
>> [ 0.235861] Modules linked in:
>> [ 0.235862] CPU: 1 PID: 83 Comm: ksgxd Not tainted 5.18.0-4-amd64 #1 Debian 5.18.16-1
>> [ 0.235865] Hardware name: Dell Inc. XPS 13 9370/0RMYH9, BIOS 1.21.0 07/06/2022
>> [ 0.235866] RIP: 0010:ksgxd+0x1b7/0x1d0
>> [ 0.235869] Code: ff e9 f2 fe ff ff 48 89 df e8 55 56 0d 00 84 c0 0f 84 c3 fe ff ff 31 ff e8 c6 56 0d 00 84 c0 0f 85 94 fe ff ff e9 af fe ff ff <0f> 0b e9 7f fe ff ff e8 3d dd 93 00 66 66 2e 0f 1f 84 00 00 00 00
>> [ 0.235870] RSP: 0000:ffffaaed0097bed8 EFLAGS: 00010287
>> [ 0.235872] RAX: ffffaaed00431890 RBX: ffff9a323ccc8000 RCX: 0000000000000000
>> [ 0.235873] RDX: 0000000080000000 RSI: ffffaaed00431850 RDI: 00000000ffffffff
>> [ 0.235875] RBP: ffff9a31416ca080 R08: ffff9a31416cae40 R09: ffff9a31416cae40
>> [ 0.235876] R10: 0000000000000000 R11: 0000000000000001 R12: ffffaaed0006bce0
>> [ 0.235877] R13: ffff9a3140e9c480 R14: ffffffff9825ee60 R15: 0000000000000000
>> [ 0.235878] FS: 0000000000000000(0000) GS:ffff9a32e6640000(0000) knlGS:0000000000000000
>> [ 0.235880] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> [ 0.235881] CR2: 0000000000000000 CR3: 00000001fbe10001 CR4: 00000000003706e0
>> [ 0.235882] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>> [ 0.235883] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>> [ 0.235884] Call Trace:
>> [ 0.235893] <TASK>
>> [ 0.235895] ? _raw_spin_lock_irqsave+0x24/0x60
>> [ 0.235900] ? _raw_spin_unlock_irqrestore+0x23/0x40
>> [ 0.235902] ? __kthread_parkme+0x36/0x90
>> [ 0.235905] kthread+0xe5/0x110
>> [ 0.235907] ? kthread_complete_and_exit+0x20/0x20
>> [ 0.235909] ret_from_fork+0x1f/0x30
>> [ 0.235914] </TASK>
>> [ 0.235915] ---[ end trace 0000000000000000 ]---
>
> Talk to the SGX developers about that mess :)
Yes, I know, and did already [1], but I am pretty sure it’s unrelated.
Kind regards,
Paul
[1]:
https://lore.kernel.org/lkml/[email protected]/
Hi Paul,
On Fri, Aug 19, 2022 at 05:59:54PM +0200, Paul Menzel wrote:
> Am 19.08.22 um 17:30 schrieb Greg KH:
> > On Fri, Aug 19, 2022 at 03:37:00PM +0200, Paul Menzel wrote:
>
> > > On the Dell XPS 13 9370 with Debian sid/unstable, connecting a Dell DA300
> > > port replicator Linux 5.18.16 logs a warning:
> > >
> > > ```
> > > $ dmesg
> > > [ 0.000000] Linux version 5.18.0-4-amd64 ([email protected])
> > > (gcc-11 (Debian 11.3.0-5) 11.3.0, GNU ld (GNU Binutils for Debian)
> > > 2.38.90.20220713) #1 SMP PREEMPT_DYNAMIC Debian 5.18.16-1 (2022-08-10)
> > > [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-5.18.0-4-amd64
> > > root=UUID=56f398e0-1e25-4fda-aa9f-611dece4b333 ro quiet
> > > […]
> > > [ 0.000000] DMI: Dell Inc. XPS 13 9370/0RMYH9, BIOS 1.21.0 07/06/2022
> > > […]
> > > [ 13.900028] ucsi_acpi USBC000:00: UCSI_GET_PDOS returned 0 bytes
> > > ```
> >
> > What warning?
>
> `ucsi_acpi USBC000:00: UCSI_GET_PDOS returned 0 bytes` has log level
> warning.
Thanks for the report.
That warning is meant to indicate that the underlying firmware (most
likely the Embedded Controller firmware) is buggy and unable to tell
us the Power Data Objects (PDO) that the partner device advertised.
However, you will also see the warning if the firmware has notified
our driver about a contract with the partner simply before making
those objects available for the operating system. That problem is
known, and it has actually already been worked around in the driver -
the PDOs are now "polled" for a while after the firmware notification.
I'll see if I can reproduce the problem so I understand exactly what's
going on in this case - I should have access to one of those XPS 13
9370 laptops.
But I'll in any case clean up this part of the driver, so the warning
should go away - one way or the other.
thanks,
--
heikki