Bug 186861 - Lenovo BIOS A2CN34WW not recognized
Summary: Lenovo BIOS A2CN34WW not recognized
Status: CLOSED INSUFFICIENT_DATA
Alias: None
Product: ACPI
Classification: Unclassified
Component: BIOS (show other bugs)
Hardware: Intel Linux
: P1 enhancement
Assignee: Zhang Rui
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-11-04 00:46 UTC by Jose Soares Junior
Modified: 2016-12-22 03:15 UTC (History)
1 user (show)

See Also:
Kernel Version: 4.8
Subsystem:
Regression: No
Bisected commit-id:

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Description Jose Soares Junior 2016-11-04 00:46:14 UTC 
During boot time KERNEL complains about BIOS "version not recognized".
The only issue I notice is that my laptop freezes if I try to put it in "hibernate" mode.

From dmidecode output:
BIOS Information
        Vendor: LENOVO
        Version: A2CN34WW(V2.02)
        Release Date: 02/28/2015
        Address: 0xE0000
        Runtime Size: 128 kB
        ROM Size: 8192 kB
        Characteristics:
                PCI is supported
                BIOS is upgradeable
                BIOS shadowing is allowed
                Boot from CD is supported
                Selectable boot is supported
                BIOS ROM is socketed
                EDD is supported
                Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
                Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
                5.25"/360 kB floppy services are 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)
                8042 keyboard services are supported (int 9h)
                CGA/mono video services are supported (int 10h)
                ACPI is supported
                USB legacy is supported
                Targeted content distribution is supported
                UEFI is supported
        BIOS Revision: 1.34
        Firmware Revision: 2.34

Handle 0x0001, DMI type 1, 27 bytes
System Information
        Manufacturer: LENOVO
        Product Name: 80E3
        Version: Lenovo G50-45
        Serial Number: 1053977701475
        UUID: 5D57984A-ABD9-E411-A961-68F728B775CB
        Wake-up Type: Power Switch
        SKU Number: LENOVO_MT_80E3_BU_idea_FM_Lenovo G50-45
        Family: IDEAPAD

Please let me know if more information is needed/wanted.

P.S.: The same laptop works fine with kernels 4..6.7, 4.6.0 and 4.5.2.

Thanks,
SoZe
Comment 1 Zhang Rui 2016-11-14 05:34:49 UTC 
(In reply to Jose Soares Junior from comment #0)
> During boot time KERNEL complains about BIOS "version not recognized".

please attach the dmesg output containing this message.

> The only issue I notice is that my laptop freezes if I try to put it in
> "hibernate" mode.

Not sure if it's related.

> P.S.: The same laptop works fine with kernels 4..6.7, 4.6.0 and 4.5.2.

I guess you mean Hibernation works well in 4.5 and 4.6 kernel, right?
does the BIOS message still exist in these two kernels?

what's the earliest kernel that hibernation fails?
Comment 2 Zhang Rui 2016-11-29 08:08:23 UTC 
ping...
Comment 3 Zhang Rui 2016-12-22 03:15:30 UTC 
Bug closed as there is no response from the bug reporter.
Please feel free to reopen it if you can provide the information requested.
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