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[solved] dhcpcd: can't get an ip from my router
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Jaglover
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Location: Saint Amant, Acadiana

PostPosted: Wed Apr 17, 2019 5:36 pm    Post subject: Reply with quote

I'd disable IOMMU, it may be the culprit if misconfigured. What you need IOMMU for?
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JohnBlbec
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Joined: 08 Feb 2003
Posts: 275

PostPosted: Wed Apr 17, 2019 6:00 pm    Post subject: Reply with quote

the generic genkernel config w/o changes makes my pc unbootable - "could not find the root block device in..."
(i have hw raid card Microsemi Adaptec SmartRAID 3154-16i Single and gentoo on RAID10)


Last edited by JohnBlbec on Wed Apr 17, 2019 6:14 pm; edited 1 time in total
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JohnBlbec
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PostPosted: Wed Apr 17, 2019 6:13 pm    Post subject: Reply with quote

Jaglover wrote:
I'd disable IOMMU, it may be the culprit if misconfigured. What you need IOMMU for?


frankly speaking on my old pc i have a grub parameter "intel_iommu=off" active. i don't know why i've removed the parameter on my new pc.
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JohnBlbec
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PostPosted: Wed Apr 17, 2019 7:22 pm    Post subject: Reply with quote

JohnBlbec wrote:
the generic genkernel config w/o changes makes my pc unbootable - "could not find the root block device in..."
(i have hw raid card Microsemi Adaptec SmartRAID 3154-16i Single and gentoo on RAID10)


i've changed all CONFIG_EXTx_FS=m to CONFIG_EXTx_FS=y and added CONFIG_SCSI_SMARTPQI=y (for my hw raid) and i've booted successfully. network is working and dhcpcd sets the right ip addr from my router. i've also removed a separate lvm2 partition for /var/log because i think it was a culprint why the pc wasn't able to shut down properly.

CONFIG_AMD_IOMMU is enabled in the generic genkernel config but i have an Intel CPU. I'll probably change it to INTEL but i'll remember it could break my settings. we'll see.

now i'll have to switch off all framebuffers which are probably set by default because proprietary NVidia drivers don't like it and then it is waiting for me many optimalizations. again from scratch. argh.

i'm really keen on undefined problem with my previous config but i'll try to compare it myself so now i'd like to say thanks you all for your help. that's why i like gentoo and its community :-)
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Tony0945
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Joined: 25 Jul 2006
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PostPosted: Wed Apr 17, 2019 7:46 pm    Post subject: Reply with quote

UEFI boot doesn't care about the kernel. You just point it and it loads what it's pointed at.
Are you using (or plan to use) refind or grub2?

EDIT: I went from grub legacy to refind. I thought I made no change but:
Code:
tony@MSI ~ $ zgrep EFI /proc/config.gz |grep -v ^#
CONFIG_EFI_PARTITION=y
CONFIG_EFI=y
CONFIG_EFI_STUB=y
CONFIG_FB_EFI=y
CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
CONFIG_EFI_VARS=y
CONFIG_EFI_ESRT=y
CONFIG_EFI_VARS_PSTORE=y
CONFIG_EFI_RUNTIME_MAP=y
CONFIG_EFI_RUNTIME_WRAPPERS=y
CONFIG_UEFI_CPER=y
CONFIG_EFIVAR_FS=y
Maybe I always had those.

Doesn't you mobo have an option for legacy boot?
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JohnBlbec
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Joined: 08 Feb 2003
Posts: 275

PostPosted: Wed Apr 17, 2019 7:58 pm    Post subject: Reply with quote

Tony0945 wrote:
UEFI boot doesn't care about the kernel. You just point it and it loads what it's pointed at.
Are you using (or plan to use) refind or grub2?

EDIT: I went from grub legacy to refind. I thought I made no change but:
Code:
tony@MSI ~ $ zgrep EFI /proc/config.gz |grep -v ^#
CONFIG_EFI_PARTITION=y
CONFIG_EFI=y
CONFIG_EFI_STUB=y
CONFIG_FB_EFI=y
CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
CONFIG_EFI_VARS=y
CONFIG_EFI_ESRT=y
CONFIG_EFI_VARS_PSTORE=y
CONFIG_EFI_RUNTIME_MAP=y
CONFIG_EFI_RUNTIME_WRAPPERS=y
CONFIG_UEFI_CPER=y
CONFIG_EFIVAR_FS=y
Maybe I always had those.

Doesn't you mobo have an option for legacy boot?


i'm using grub2 and i don't plan to change it. it seems generic config is able to manage everything needed for uefi boot.
(my old pc has grub 2, legacy boot and uses uvesa and v86d with proprietary nvidia drivers)

now i need to find the best solution for framebuffer and proprietary nvidia drivers and mode settings for grub2. i'd like to avoid using v86d on my new pc - what framebuffer settings do you recommend?
the 1st try has finished with black screen and i can see no ouptut just first two lines of kernel :-D
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 44900
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PostPosted: Wed Apr 17, 2019 8:15 pm    Post subject: Reply with quote

JohnBlbec,

uvesa is gone. You are left with UEFI_FB, SIMPLE_FB or VESAFB if you must have a framebuffer console and the nvidia binary blob.
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those that do backups
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