Bug 208705 - 100 ms delay in PCI initialization
Summary: 100 ms delay in PCI initialization
Status: NEW
Alias: None
Product: ACPI
Classification: Unclassified
Component: ACPICA-Core (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: acpi_acpica-core@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-07-27 09:23 UTC by Paul Menzel
Modified: 2020-07-27 09:23 UTC (History)
0 users

See Also:
Kernel Version: 5.7.6
Tree: Mainline
Regression: No


Attachments
Linux 5.7.6 messages (output of `dmesg`) (60.85 KB, text/plain)
2020-07-27 09:23 UTC, Paul Menzel
Details

Description Paul Menzel 2020-07-27 09:23:32 UTC
Created attachment 290607 [details]
Linux 5.7.6 messages (output of `dmesg`)

On Acer TravelMate 5735Z with Debian Sid/unstable and Linux 5.7.6, over 100 ms are spent in PnP ACPI init.

```
[    0.000000] microcode: microcode updated early to revision 0xa0b, date = 2010-09-28
[    0.000000] Linux version 5.7.0-1-amd64 (debian-kernel@lists.debian.org) (gcc version 9.3.0 (Debian 9.3.0-14), GNU ld (GNU Binutils for Debian) 2.34) #1 SMP Debian 5.7.6-1 (2020-06-24)
[…]
[    0.254356] pci 0000:00:1e.0:   bridge window [mem 0xc0000000-0xfebfffff window] (subtractive decode)
[    0.360255] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 7 9 10 *11 12)
[…]
```

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