Public bug reported:
On eoan dev here:
Flicker free booting doesn't work since I get:
Ignoring BGRT: invalid version 0 (expected 1)
on dmesg on my Thinkpad x230t i7-3520M (Ivy Bridge).
Second, if I add:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.fastboot=1"
to /etc/default/grub then it doesn't show plymouth but displays the text Ubuntu
loading screen and I need to press ALT+F1 so GDM will show up (see video: [1]).
If I press escape while it is displaying text Ubuntu loading, it loads plymouth
(see video: [2]) and shows the spinner (no lenovo word) and I don't need to
press ALT+F1 since GDM shows after plymouth. So I guess there's a bug there,
since it should display plymouth and not the Ubuntu loading text and boot
directly to GDM.
Now if I patch the kernel:
diff --git a/drivers/firmware/efi/efi-bgrt.c b/drivers/firmware/efi/efi-bgrt.c
index b07c17643210..5754e530af9a 100644
--- a/drivers/firmware/efi/efi-bgrt.c
+++ b/drivers/firmware/efi/efi-bgrt.c
@@ -42,7 +42,7 @@ void __init efi_bgrt_init(struct acpi_table_header *table)
return;
}
*bgrt = *(struct acpi_table_bgrt *)table;
- if (bgrt->version != 1) {
+ if (bgrt->version != 1 && false) { /* don't check BGRT version */
pr_notice("Ignoring BGRT: invalid version %u (expected 1)\n",
bgrt->version);
goto out;
And linux-modules and linux-modules-extra is not installed in that
kernel, then I have somewhat flicker free boot. It shows the bgrt
screen then goes black (probably grub loading), then shows the bgrt
screen again with the spinner. Nice! (see video: [3])
So, I guess my Thinkpad is not setting bgrt version properly. So can we
have a kernel parameter to disable checking of bgrt version?
Then again, if I install linux-modules and linux-modules-extra then I
get the Ubuntu loading text when booting, but if I press esc I get the
bgrt screen with spinner. I think it's it's a bug somewhere in the
linux-modules package.
[1] https://youtu.be/tAgRf2c7J4A
[2] https://youtu.be/1ystyzLhSaw
[3] https://youtu.be/8AAkUDO2Kt8
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.2.0-8-generic (not installed)
ProcVersionSignature: Ubuntu 5.2.0-8.9+test1-generic 5.2.0
Uname: Linux 5.2.0-8-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: shemgp 13358 F.... pulseaudio
CurrentDesktop: GNOME
Date: Tue Jul 30 23:49:49 2019
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=cc5ba738-82e8-404a-9bcc-f1dfed94fce0
InstallationDate: Installed on 2015-09-28 (1401 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: LENOVO 34361A0
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.2.0-8-generic
root=UUID=da81a856-84d5-4ca7-8c0a-4f20006730bc ro quiet splash i915.fastboot=1
vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.2.0-8-generic N/A
linux-backports-modules-5.2.0-8-generic N/A
linux-firmware 1.181
SourcePackage: linux
StagingDrivers: ashmem_linux
UpgradeStatus: Upgraded to eoan on 2019-07-26 (4 days ago)
dmi.bios.date: 06/11/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: GCETB4WW (2.74 )
dmi.board.asset.tag: Not Available
dmi.board.name: 34361A0
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrGCETB4WW(2.74):bd06/11/2019:svnLENOVO:pn34361A0:pvrThinkPadX220:rvnLENOVO:rn34361A0:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.family: ThinkPad X220
dmi.product.name: 34361A0
dmi.product.sku: LENOVO_MT_3436
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug eoan flickerfreeboot staging
** Description changed:
On eoan dev here:
Flicker free booting doesn't work since I get:
Ignoring BGRT: invalid version 0 (expected 1)
on dmesg on my Thinkpad x230t i7-3520M (Ivy Bridge).
Second, if I add:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.fastboot=1"
- to /etc/default/grub then it doesn't show plymouth but displays the text
Ubuntu loading screen and I need to press CTRL+ALT+F1 so GDM will show up (see
video: [1]). If I press escape while it is displaying text Ubuntu loading, it
loads plymouth (see video: [2]) and shows the spinner (no lenovo word) and I
don't need to press CTRL+ALT+F1. So I guess there's a bug there, since it
should display plymouth and not the Ubuntu loading text and boot directly to
GDM.
+ to /etc/default/grub then it doesn't show plymouth but displays the text
Ubuntu loading screen and I need to press ALT+F1 so GDM will show up (see
video: [1]). If I press escape while it is displaying text Ubuntu loading, it
loads plymouth (see video: [2]) and shows the spinner (no lenovo word) and I
don't need to press ALT+F1 since GDM shows after plymouth. So I guess there's a
bug there, since it should display plymouth and not the Ubuntu loading text and
boot directly to GDM.
Now if I patch the kernel:
diff --git a/drivers/firmware/efi/efi-bgrt.c b/drivers/firmware/efi/efi-bgrt.c
index b07c17643210..5754e530af9a 100644
--- a/drivers/firmware/efi/efi-bgrt.c
+++ b/drivers/firmware/efi/efi-bgrt.c
@@ -42,7 +42,7 @@ void __init efi_bgrt_init(struct acpi_table_header *table)
- return;
- }
- *bgrt = *(struct acpi_table_bgrt *)table;
+ return;
+ }
+ *bgrt = *(struct acpi_table_bgrt *)table;
- if (bgrt->version != 1) {
+ if (bgrt->version != 1 && false) { /* don't check BGRT version */
- pr_notice("Ignoring BGRT: invalid version %u (expected 1)\n",
- bgrt->version);
- goto out;
+ pr_notice("Ignoring BGRT: invalid version %u (expected 1)\n",
+ bgrt->version);
+ goto out;
And linux-modules and linux-modules-extra is not installed in that
kernel, then I have somewhat flicker free boot. It shows the bgrt
screen then goes black (probably grub loading), then shows the bgrt
screen again with the spinner. Nice! (see video: [3])
So, I guess my Thinkpad is not setting bgrt version properly. So can we
have a kernel parameter to disable checking of bgrt version?
Then again, if I install linux-modules and linux-modules-extra then I
get the Ubuntu loading text when booting, but if I press esc I get the
bgrt screen with spinner. I think it's it's a bug somewhere in the
- modules package.
+ linux-modules package.
[1] https://youtu.be/tAgRf2c7J4A
[2] https://youtu.be/1ystyzLhSaw
[3] https://youtu.be/8AAkUDO2Kt8
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.2.0-8-generic (not installed)
ProcVersionSignature: Ubuntu 5.2.0-8.9+test1-generic 5.2.0
Uname: Linux 5.2.0-8-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
- USER PID ACCESS COMMAND
- /dev/snd/controlC0: shemgp 13358 F.... pulseaudio
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC0: shemgp 13358 F.... pulseaudio
CurrentDesktop: GNOME
Date: Tue Jul 30 23:49:49 2019
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=cc5ba738-82e8-404a-9bcc-f1dfed94fce0
InstallationDate: Installed on 2015-09-28 (1401 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: LENOVO 34361A0
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.2.0-8-generic
root=UUID=da81a856-84d5-4ca7-8c0a-4f20006730bc ro quiet splash i915.fastboot=1
vt.handoff=7
RelatedPackageVersions:
- linux-restricted-modules-5.2.0-8-generic N/A
- linux-backports-modules-5.2.0-8-generic N/A
- linux-firmware 1.181
+ linux-restricted-modules-5.2.0-8-generic N/A
+ linux-backports-modules-5.2.0-8-generic N/A
+ linux-firmware 1.181
SourcePackage: linux
StagingDrivers: ashmem_linux
UpgradeStatus: Upgraded to eoan on 2019-07-26 (4 days ago)
dmi.bios.date: 06/11/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: GCETB4WW (2.74 )
dmi.board.asset.tag: Not Available
dmi.board.name: 34361A0
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrGCETB4WW(2.74):bd06/11/2019:svnLENOVO:pn34361A0:pvrThinkPadX220:rvnLENOVO:rn34361A0:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.family: ThinkPad X220
dmi.product.name: 34361A0
dmi.product.sku: LENOVO_MT_3436
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO
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https://bugs.launchpad.net/bugs/1838443
Title:
No flicker free boot since Ignoring BGRT: invalid version 0 (expected
1)
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