[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
No, "pcie_aspm=off" does not help. I also tried uninstalling broadcom-sta-dkms. It blacklists the b44 module via /etc/modprobe.d/broadcom-sta-dkms.conf and also https://wiki.debian.org/wl says that b44 is incompatible with wl. This did not help either. My laptop seems fine with just having the b44 module loaded. Lockups only happen when I plug in the Ethernet cable and start using it. The lockup seems total, with even Magic SysRq from the laptop's own keyboard doing absolutely nothing. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
Does kernel parameter "pcie_aspm=off" help? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
In Ubuntu 21.10 with 5.13.0-16-generic kernel, I don't get any dmesg errors after I "modprobe b44" and Ethernet works initially at reasonable speed, but the whole system freezes totally after a few minutes. I suppose this means the b44 driver still doesn't work properly, because I don't get such freezes when using WiFi. Though I don't know for sure, because I don't have any error messages. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
Please test latest mainline kernel: https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.8-rc3/ If mainline kernel doesn't solve the issue please do a kernel bisection. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
I don't see a null pointer message but the b44 driver is still broken in 5.4.0-33-generic on my Dell Inspiron 6400: [ 3148.539194] ssb: Found chip with id 0x4401, rev 0x02 and package 0x00 [ 3148.599317] b44 :03:00.0: Sonics Silicon Backplane found on PCI device :03:00.0 [ 3148.599414] b44: Broadcom 44xx/47xx 10/100 PCI ethernet driver version 2.0 [ 3148.627839] b44 ssb1:0 eth0: Broadcom 44xx/47xx 10/100 PCI ethernet driver 00:15:c5:b3:8a:ba [ 3148.684246] swiotlb_tbl_map_single: 14 callbacks suppressed [ 3148.684251] b44 :03:00.0: swiotlb buffer is full (sz: 1566 bytes), total 0 (slots), used 0 (slots) [ 3148.684261] [ cut here ] [ 3148.684267] WARNING: CPU: 0 PID: 36638 at kernel/dma/direct.c:35 report_addr+0x37/0x60 [ 3148.684268] Modules linked in: b44 mii iptable_filter bpfilter ccm b43 dell_laptop dell_smm_hwmon snd_hda_codec_hdmi cordic kvm snd_hda_codec_idt snd_hda_codec_generic bcma ledtrig_audio radeon dell_wmi snd_hda_intel snd_intel_dspcfg dell_smbios dcdbas input_leds joydev mac80211 snd_hda_codec r852 sparse_keymap wmi_bmof serio_raw dell_wmi_descriptor ttm sm_common snd_hda_core nand snd_hwdep drm_kms_helper nand_ecc snd_pcm cfg80211 bch i2c_algo_bit snd_timer fb_sys_fops r592 nandcore mtd memstick syscopyarea sysfillrect snd libarc4 sysimgblt soundcore mac_hid sch_fq_codel coretemp parport_pc ppdev lp parport drm ip_tables x_tables autofs4 ssb_hcd gpio_ich pata_acpi i2c_i801 psmouse lpc_ich firewire_ohci sdhci_pci cqhci firewire_core sdhci crc_itu_t ssb wmi video [ 3148.684314] CPU: 0 PID: 36638 Comm: NetworkManager Not tainted 5.4.0-33-generic #37-Ubuntu [ 3148.684315] Hardware name: Dell Inc. MM061 /0XD720, BIOS A17 06/13/2007 [ 3148.684318] RIP: 0010:report_addr+0x37/0x60 [ 3148.684320] Code: 48 8b 87 28 02 00 00 48 89 75 f8 48 85 c0 74 2a 4c 8b 00 b8 fe ff ff ff 49 39 c0 76 11 80 3d db c3 71 01 00 0f 84 7d 07 00 00 <0f> 0b c9 c3 48 83 bf 38 02 00 00 00 74 f2 eb e3 80 3d bf c3 71 01 [ 3148.684321] RSP: 0018:9ae68055b450 EFLAGS: 00010246 [ 3148.684323] RAX: fffe RBX: RCX: [ 3148.684324] RDX: 061e RSI: 6b440a80 RDI: 8cb34b4db0b0 [ 3148.684325] RBP: 9ae68055b458 R08: 3fff R09: 0004 [ 3148.684327] R10: R11: 0001 R12: 8cb2f8b0c000 [ 3148.684328] R13: 061e R14: 8cb2f45cef00 R15: 8cb2f96ac8c0 [ 3148.684330] FS: 7f02e05ca240() GS:8cb34c60() knlGS: [ 3148.684331] CS: 0010 DS: ES: CR0: 80050033 [ 3148.684333] CR2: 7f5935e43f28 CR3: c6128000 CR4: 06f0 [ 3148.684334] Call Trace: [ 3148.684340] dma_direct_map_page+0xdc/0xf0 [ 3148.684347] b44_alloc_rx_skb+0x1bb/0x4a0 [b44] [ 3148.684348] ? dma_direct_alloc_pages+0x93/0x130 [ 3148.684351] b44_init_rings+0xb8/0x190 [b44] [ 3148.684354] b44_open+0xfc/0x470 [b44] [ 3148.684357] __dev_open+0xd4/0x170 [ 3148.684359] __dev_change_flags+0x191/0x1f0 [ 3148.684361] dev_change_flags+0x26/0x60 [ 3148.684364] do_setlink+0x82e/0x980 [ 3148.684368] ? cpumask_next+0x1b/0x20 [ 3148.684371] ? __snmp6_fill_stats64.isra.0+0xe7/0x110 [ 3148.684375] ? __nla_validate_parse+0x42/0x140 [ 3148.684377] __rtnl_newlink+0x580/0x970 [ 3148.684380] ? __nla_put+0x20/0x30 [ 3148.684383] ? __kmalloc_node_track_caller+0x205/0x320 [ 3148.684385] ? pskb_expand_head+0x75/0x2d0 [ 3148.684387] ? __kmalloc_reserve.isra.0+0x31/0x90 [ 3148.684391] ? security_sock_rcv_skb+0x2f/0x50 [ 3148.684393] ? sk_filter_trim_cap+0x48/0x220 [ 3148.684395] ? skb_queue_tail+0x43/0x50 [ 3148.684397] ? __netlink_sendskb+0x42/0x50 [ 3148.684401] ? security_capable+0x3d/0x60 [ 3148.684404] ? _cond_resched+0x19/0x30 [ 3148.684406] ? kmem_cache_alloc_trace+0x16c/0x240 [ 3148.684408] rtnl_newlink+0x49/0x70 [ 3148.684410] rtnetlink_rcv_msg+0x2c0/0x380 [ 3148.684413] ? vsnprintf+0x35d/0x4e0 [ 3148.684414] ? rtnl_calcit.isra.0+0x100/0x100 [ 3148.684416] netlink_rcv_skb+0x50/0x120 [ 3148.684418] rtnetlink_rcv+0x15/0x20 [ 3148.684420] netlink_unicast+0x187/0x220 [ 3148.684422] netlink_sendmsg+0x222/0x3e0 [ 3148.684425] sock_sendmsg+0x65/0x70 [ 3148.684426] sys_sendmsg+0x212/0x280 [ 3148.684429] ___sys_sendmsg+0x88/0xd0 [ 3148.684431] ? rtnl_unlock+0xe/0x10 [ 3148.684433] ? addrconf_sysctl_forward+0x111/0x280 [ 3148.684436] ? get_max_files+0x20/0x20 [ 3148.684439] ? __fget_light+0x57/0x70 [ 3148.684441] __sys_sendmsg+0x5c/0xa0 [ 3148.68] __x64_sys_sendmsg+0x1f/0x30 [ 3148.684447] do_syscall_64+0x57/0x190 [ 3148.684450] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 3148.684452] RIP: 0033:0x7f02e1a3b12d [ 3148.684454] Code: 28 89 54 24 1c 48 89 74 24 10 89 7c 24 08 e8 ca ee ff ff 8b 54 24 1c 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 2f 44 89 c7 48 89 44 24 08 e8 fe ee ff ff 48 [ 3148.684455] RSP: 002b:7fffaac61a40 EFLAGS:
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
Please test latest 20.04 kernel. ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
iommu=soft does not help, and I don't understand why it would help theoretically when the Core 2 Duo T7400 CPU doesn't have a hardware IOMMU. The problem seems to be that the 64 MB buffer is allocated beyond 1 GB. One theoretical good workaround would be to boot up with only 1 GB and then enable the rest of memory. But I'm not sure how to do that. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
@Boris Gjenero, try using the kernel parameter "iommu=soft" instead of limiting the memory to 1GB. It will force the use of a 64MB swiotlb bounce buffer to workaround this issue. Tested with Focal Fossa Beta ISO (Kernel 5.4.0-21-generic) on my Optiplex 320 with 2GB of RAM. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
This problem still exists in Ubuntu Focal Fossa (development branch) 20.04 with linux-image-5.4.0-21-generic. It also exists in linux-image- unsigned-5.6.2-050602-generic_5.6.2-050602.202004020822_amd64.deb With linux-image-5.4.0-21-generic I didn't get any error messages after "insmod b44" in recovery mode. Also I normally booted linux- image-5.4.0-21-generic with mem=1G (limiting available memory to 1 GB) twice and also didn't get error messages after "sudo insmod b44". These symptoms are consistent with the hypothesis that swiotlb bounce buffers normally get allocated above 1 GB, causing a problem for b44 because the device can't do DMA above 1 GB and the driver can't handle this situation. That's the same problem discussed in this thread from 2011 https://groups.google.com/forum/#!topic/linux.kernel/GEx80ZCue1o Obviously limiting memory to 1 GB has an unacceptable performance penalty, but it's nice to have at least one way to get working Ethernet. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
I don't normally use Ethernet on my laptop, and for some reason the b44 module for Ethernet doesn't get loaded normally. So I didn't notice this. But I'm getting the same problem reported in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/comments/8 in Ubuntu 19.10 with linux-image-5.3.0-24-generic on my Inspiron 6400. This Debian bug report has some ideas about a cause: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=939697 ** Bug watch added: Debian Bug tracker #939697 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=939697 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
@Hans P Möller, i've tested with kernel 5.1.0-050100rc3-generic and the b44 module loaded and worked fine, but it created some others warnings in the dmesg: [ 44.045886] b44 :02:09.0: swiotlb buffer is full (sz: 1566 bytes) [ 44.045906] WARNING: CPU: 1 PID: 565 at kernel/dma/direct.c:43 report_addr+0x37/0x60 [ 44.045908] Modules linked in: snd_hda_codec_analog snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep r8188eu(C) snd_pcm snd_seq_midi snd_seq_midi_event lib80211 radeon cfg80211 snd_rawmidi joydev input_leds dcdbas coretemp ttm drm_kms_helper snd_seq drm i2c_algo_bit fb_sys_fops syscopyarea sysfillrect serio_raw snd_seq_device sysimgblt snd_timer snd soundcore mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 pata_acpi hid_generic usbhid hid psmouse b44 ssb mii pata_atiixp i2c_piix4 ahci libahci [ 44.045940] CPU: 1 PID: 565 Comm: NetworkManager Tainted: GWC 5.1.0-050100rc3-generic #201904010618 [ 44.045942] Hardware name: Dell Inc. OptiPlex 320 /0UT237, BIOS 1.1.12 06/17/2009 [ 44.045944] RIP: 0010:report_addr+0x37/0x60 [ 44.045946] Code: 48 8b 87 30 02 00 00 48 89 75 f8 48 85 c0 74 2a 4c 8b 00 b8 fe ff ff ff 49 39 c0 76 11 80 3d f7 6b 72 01 00 0f 84 cf 07 00 00 <0f> 0b c9 c3 48 83 bf 40 02 00 00 00 74 f2 eb e3 80 3d db 6b 72 01 [ 44.045947] RSP: 0018:9fb4808af478 EFLAGS: 00010246 [ 44.045949] RAX: fffe RBX: 88a93bc1f0b0 RCX: [ 44.045950] RDX: 061e RSI: 7a2df880 RDI: 88a93bc1f0b0 [ 44.045951] RBP: 9fb4808af480 R08: 3fff R09: 0004 [ 44.045952] R10: R11: 0001 R12: 061e [ 44.045953] R13: 88a92cc35500 R14: R15: 88a93c2898c0 [ 44.045955] FS: 7fd85987abc0() GS:88a93fc4() knlGS: [ 44.045956] CS: 0010 DS: ES: CR0: 80050033 [ 44.045957] CR2: 7f0e4401e008 CR3: 33e44000 CR4: 06e0 [ 44.045958] Call Trace: [ 44.045964] dma_direct_map_page+0xdf/0xf0 [ 44.045971] b44_alloc_rx_skb+0x18e/0x3f0 [b44] [ 44.045973] b44_init_rings+0xbe/0x1b0 [b44] [ 44.045976] b44_open+0xfc/0x3f0 [b44] [ 44.045980] __dev_open+0xd4/0x170 [ 44.045982] __dev_change_flags+0x18f/0x200 [ 44.045984] dev_change_flags+0x27/0x60 [ 44.045986] do_setlink+0x32c/0xe30 [ 44.045991] ? __nla_parse+0xf1/0x120 [ 44.045995] ? cpumask_next+0x1b/0x20 [ 44.045998] ? __snmp6_fill_stats64.isra.57+0xf6/0x120 [ 44.046000] ? __nla_parse+0x38/0x120 [ 44.046002] __rtnl_newlink+0x52a/0x8f0 [ 44.046004] ? __nla_put+0x20/0x30 [ 44.046007] ? __kmalloc_node_track_caller+0x1db/0x2b0 [ 44.046009] ? pskb_expand_head+0x70/0x2e0 [ 44.046011] ? __kmalloc_reserve.isra.53+0x31/0x90 [ 44.046014] ? apparmor_inet_conn_request+0x40/0x40 [ 44.046017] ? security_sock_rcv_skb+0x2f/0x50 [ 44.046019] ? sk_filter_trim_cap+0x48/0x210 [ 44.046020] ? skb_queue_tail+0x43/0x50 [ 44.046024] ? __netlink_sendskb+0x53/0x70 [ 44.046029] ? fib6_clean_node+0x40/0x180 [ 44.046032] ? _cond_resched+0x19/0x30 [ 44.046034] ? kmem_cache_alloc_trace+0x150/0x1d0 [ 44.046036] rtnl_newlink+0x48/0x70 [ 44.046037] rtnetlink_rcv_msg+0x213/0x300 [ 44.046039] ? rtnl_calcit.isra.32+0x100/0x100 [ 44.046041] netlink_rcv_skb+0x4f/0x120 [ 44.046042] rtnetlink_rcv+0x15/0x20 [ 44.046044] netlink_unicast+0x19f/0x260 [ 44.046046] netlink_sendmsg+0x20d/0x3c0 [ 44.046048] sock_sendmsg+0x3e/0x50 [ 44.046050] ___sys_sendmsg+0x295/0x2f0 [ 44.046053] ? rtnl_unlock+0xe/0x10 [ 44.046055] ? addrconf_sysctl_forward+0x114/0x280 [ 44.046057] ? security_capable+0x3f/0x60 [ 44.046059] ? dev_forward_change+0x140/0x140 [ 44.046062] ? lockref_put_or_lock+0x60/0x80 [ 44.046064] ? __fget_light+0x59/0x70 [ 44.046066] __sys_sendmsg+0x5c/0xa0 [ 44.046068] __x64_sys_sendmsg+0x1f/0x30 [ 44.046071] do_syscall_64+0x5a/0x110 [ 44.046074] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 44.046076] RIP: 0033:0x7fd85b000cb7 [ 44.046078] Code: 44 00 00 41 54 41 89 d4 55 48 89 f5 53 89 fb 48 83 ec 10 e8 3b ed ff ff 44 89 e2 48 89 ee 89 df 41 89 c0 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 48 89 44 24 08 e8 74 ed ff ff 48 [ 44.046079] RSP: 002b:7ffc8d8acb80 EFLAGS: 0293 ORIG_RAX: 002e [ 44.046081] RAX: ffda RBX: 000a RCX: 7fd85b000cb7 [ 44.046082] RDX: RSI: 7ffc8d8acbd0 RDI: 000a [ 44.046083] RBP: 7ffc8d8acbd0 R08: R09: [ 44.046084] R10: 7fd85afe6ca0 R11: 0293 R12: [ 44.046085] R13: R14: 7ffc8d8acd88 R15: 7ffc8d8acd7c [ 44.046087] ---[ end trace 470ecf714c2b853b ]--- [ 44.046098] b44 :02:09.0: swiotlb buffer is full (sz: 1566 byte
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
@Boris please test kernel 5.1.0-050100rc3-generic (or above) at least #1822913 was solved with this kernel -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
linux-image- unsigned-4.20.0-042000-generic_4.20.0-042000.201812232030_amd64.deb is good but linux-image- unsigned-5.0.0-05rc1-generic_5.0.0-05rc1.201901062130_amd64.deb is bad. I'm not sure I'll have time for a git bisect. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
I just tested Kernel 4.20.17 an it is good. I will do the bisect but I don't have much time at this moment -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
Ok, I failed to find where the regression comes from. Would it be possible for you to do a kernel bisection? First, find the last good -rc kernel and the first bad -rc kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/ Then, $ sudo apt build-dep linux $ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git $ cd linux $ git bisect start $ git bisect good $(the good version you found) $ git bisect bad $(the bad version found) $ make localmodconfig $ make -j`nproc` deb-pkg Install the newly built kernel, then reboot with it. If the issue still happens, $ git bisect bad Otherwise, $ git bisect good Repeat to "make -j`nproc` deb-pkg" until you find the commit that causes the regression. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1821564] Re: b44 Ethernet driver null pointer during initialization
Sorry, I mean bug is not present in 4.18.0-16-generic and present in 5.0.0-7-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821564 Title: b44 Ethernet driver null pointer during initialization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
